Magneton device, integrated magneton device and use method of integrated magneton device

Abstract

The invention belongs to the technical field of information processing based on magnetonics, and relates to a magneton device, an integrated magneton device and a use method of the integrated magneton device. The device comprises a multi-branch connection waveguide, an input module and an output module, one end of the multi-branch connection waveguide is a common waveguide, and the other end is a branch waveguide; the branch waveguide is a waveguide in which two or three branches are arranged in an outward radiation manner along a fulcrum, each branch is connected with the common waveguide through the fulcrum, and a combination area of the multi-branch connection waveguide is formed at the joint, so that the magneton signals of the branches are converged in the combination area of the multi-branch connection waveguide to generate nonlinear magneton scattering; performing phase synchronization of the plurality of magneton signals; and an output port is provided with a pumping antenna working in a bistable window area, and the pumping antenna is used for realizing logic judgment and self-normalization of output signal strength by adjusting the microwave power of the pumping antenna, so that a key technology is provided for constructing a low-power-consumption, high-density and cascading information processing chip.

Description

Technical Field

[0001] This invention relates to the field of information processing technology based on magnetoscience, and in particular to a magneto device, an integrated magneto device, and a method for integrating and using the same. Background Technology

[0002] With the advent of the post-Moore's Law era, traditional charge-based electronic devices are facing bottlenecks in power consumption and integration density. Magnetonics, an emerging field that utilizes spin waves (non-uniform precession of magnetic moments) rather than the directional movement of electron charge for information processing, is considered an important direction for the future development of information technology due to its potential for low power consumption, compatibility with microwave signals, and rich nonlinear phenomena.

[0003] However, the development of current magnetic logic devices is limited by two major obstacles: first, phase sensitivity. Most logic schemes based on spin-wave interference have outputs that strongly depend on the phase relationship of the input waves. Environmental noise or circuit mismatch can easily introduce phase disturbances, leading to unstable logic results and severely restricting the robustness and practicality of the devices; second, rapid attenuation. Spin waves attenuate rapidly in magnetic materials due to damping effects, causing signal strength to decrease exponentially with propagation distance. This makes it impossible for the output of a single logic gate to directly drive the next level of logic gate, making it extremely difficult to achieve reliable multi-stage cascading. Existing technologies typically rely on off-chip power amplifiers or complex feedback circuits to compensate for losses, which not only increases system complexity and power consumption but also limits the transition of magnetics to large-scale integrated circuits and cannot complement advanced CMOS technology.

[0004] To address these issues, while some research has attempted to optimize devices through reverse engineering using artificial intelligence or by introducing special materials, these efforts have yielded limited success in fundamentally resolving phase sensitivity and signal recovery. Therefore, a novel design paradigm is urgently needed that can simultaneously address the inherent problems of phase sensitivity and magnetic signal attenuation at the single-device level, thereby realizing true magnetic logic functional units and their cascading. Summary of the Invention

[0005] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides a magnetic device, an integrated magnetic device, and a method for integrating and using the same. By introducing a specific geometric configuration into the device structure and utilizing the nonlinear effect of materials, the phase sensitivity and magnetic signal attenuation problems of existing magnetic logic devices are overcome, and phase desensitization, signal self-normalization, and reconfigurable logic functions are achieved, thereby supporting stable multi-level integration and cascading.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a magnetic logic device is provided, comprising: a multi-branch connected waveguide, an input module, and an output module; The multi-branch connecting waveguide has a common waveguide with a single branch at one end and a branch waveguide at the other end. Each branch waveguide radiates outward from a fulcrum with two or three branches. Each branch is connected to the common waveguide through the fulcrum, forming a junction region at the junction. This allows the magnetic wave signals from each branch to converge in the junction region, resulting in nonlinear magnetic wave scattering and phase synchronization of multiple magnetic wave signals. The multi-branch connecting waveguide is a magnetic waveguide with a high nonlinear frequency shift coefficient (0.5 ~ 6 GHz) and a damping coefficient (2 × 10⁻⁶). -4 ~ 4×10 -3 ; The input module includes the same number of input ports as the branches in the multi-branch waveguide. The input ports in the input module are connected one-to-one with the branches in the branch waveguide. The output module includes an output port, which is connected to a common waveguide in the branch waveguide. The output port is equipped with a pump antenna operating in a bistable window region, which is used to achieve self-normalization of logic judgment and output signal strength by adjusting the microwave power of the pump antenna.

[0007] Preferably, when the branch waveguide is a waveguide with two branches radiating outward from a single point, the multi-branch connecting waveguide is a Y-shaped waveguide; when the branch waveguide is a waveguide with three branches radiating outward from a single point, the multi-branch connecting waveguide is a ψ-shaped waveguide.

[0008] Preferably, the material of the multi-branch connecting waveguide includes yttrium iron garnet ferrite, cobalt iron boron alloy, iron cobalt alloy, or nickel iron alloy.

[0009] Preferably, each branch in the branch waveguide is curved and is smoothly connected to the common waveguide through a spur point.

[0010] Preferably, the thickness of each branch in the branch waveguide and the common waveguide are each 10 nm to 100 nm, and the width is each 10 nm to 1 nm. m.

[0011] Preferably, the input ports in the input module are connected one-to-one with the branches in the branch waveguide via adhesive layers, and the output ports in the output module are connected to the common waveguide in the branch waveguide via adhesive layers; wherein the adhesive layer is made of Ti, Ta, or Cr, and has a width of 2 to 5 mm. m, with a thickness of 3 ~ 10 nm.

[0012] According to a second aspect of the present invention, an integrated magnetic device is provided, comprising a plurality of magnetic logic devices as described above cascaded via pump antennas thereon, wherein the output port of the previous level magnetic logic device in the integrated magnetic device is directly connected to the next level magnetic logic device as its input port via a waveguide; and in one integrated magnetic device, the multi-branch connecting waveguides in all magnetic logic devices are of the same type.

[0013] According to a third aspect of the present invention, a method of using the magnetic logic device as described above is provided, wherein the branch waveguide is a waveguide with two branches radiating outward from a single limb, the method comprising: Pulse signals are simultaneously applied to multiple input ports of the input module to excite magnetic signals. The magnetic signals are transmitted through two branches in the branch waveguide and converged in the junction region of the multi-branch connecting waveguide to cause nonlinear magnetic scattering. The phase of the two magnetic signals is synchronized. Then, the phase-synchronized magnetic signals are transmitted to the output module along the common waveguide. The activation threshold is dynamically configured by adjusting the microwave power of the pump antenna to realize OR and AND logic. Specifically, the OR and AND logic is implemented by dynamically configuring the activation threshold through adjusting the microwave power of the pump antenna. This includes: implementing the OR logic function by adjusting the threshold to be lower than the spin wave intensity of any one of the two magnetic signals at the output port; or implementing the AND logic function by adjusting the threshold to be higher than the spin wave intensity of any one of the two magnetic signals at the output port and lower than the total spin wave intensity of the two magnetic signals at the output port.

[0014] According to a fourth aspect of the present invention, a method of using the magnetic logic device as described above is provided, wherein the branch waveguide is a waveguide with three branches radiating outward from a single limb, the method comprising: Pulse signals are simultaneously applied to multiple input ports of the input module to excite magnetic signals. The magnetic signals are transmitted through three branches in the branch waveguide and converged in the junction region of the multi-branch connecting waveguide to achieve nonlinear magnetic scattering, thereby synchronizing the phase of the three magnetic signals. Then, the phase-synchronized magnetic signals are transmitted to the output module along the common waveguide. By adjusting the microwave power of the pump antenna, the activation threshold is dynamically configured to be higher than the spin wave intensity of any one of the three magnetic signals at the output port and lower than the total spin wave intensity of any two of the three magnetic signals at the output port, thus realizing a majority gate.

[0015] According to a fifth aspect of the present invention, an integration method for the integrated magnetic devices as described above is provided. This method employs standard micro / nano fabrication techniques to prepare compact waveguide and antenna structures. The output port signal of the previous-stage magnetic logic device is directly connected to the next-stage magnetic logic device via its pump antenna as its input port. Furthermore, by utilizing the signal strength self-normalization characteristic and phase desensitization characteristic of deep nonlinear effects, deterministic state transmission without phase sensitivity and magnetic signal attenuation is achieved, supporting the cascading of multi-stage magnetic logic operations.

[0016] In summary, compared with the prior art, the above-described technical solutions conceived by this invention mainly possess the following technical advantages: 1. The magnetic particle device provided by this invention achieves phase desensitization, signal self-normalization, and reconfigurable logic functions by introducing specific geometric configurations into the device structure and utilizing material nonlinear effects. Specifically, through waveguide geometry design, the propagating spin wave undergoes nonlinear magnetic particle scattering in the junction region of the multi-branch connected waveguide. Although the phase of the scattered magnetic particle is random, spin waves from different input ends can synchronously scatter the phase of the magnetic particle through the nonlinear scattering process. Thus, regardless of the input phase difference, the scattered magnetic particle can undergo constructive interference, thereby physically eliminating the dependence of the logic function on the input signal phase difference and greatly enhancing the device's anti-interference capability and stability. Furthermore, a pump antenna operating in the bistable window region is introduced at the output port. This antenna only responds to the constructed interference signal after phase synchronization (i.e., the enhanced output with phase desensitization achieved): when the total intensity of the synchronization signal exceeds an adjustable threshold, the antenna switches from the ground state to the excited state and excites a spin wave signal with a fixed amplitude. This process not only amplifies the phase-synchronized signal (experiments have shown it can be up to 30 times), but more importantly, it achieves self-normalization of the output strength. That is, regardless of the strength of the input signal reaching the output port, as long as the phase-synchronized strength exceeds the threshold, the output signal strength remains consistent, providing a stable and uniform signal strength for subsequent cascading and fundamentally solving the problems of phase sensitivity and signal attenuation. Phase synchronization provides a reliable signal basis for subsequent threshold judgment, while threshold triggering further utilizes this synchronized amplified signal to achieve normalized output. Therefore, by simply adjusting the input microwave power of the pump antenna at the output port, its trigger threshold can be dynamically changed, thereby enabling dynamic switching and reconfiguration of different logic functions on the same physical device based on the phase-synchronized signal strength.

[0017] 2. In this invention, when the branch waveguide is a waveguide with two branches radiating outward from a single point, the multi-branch connecting waveguide is a Y-shaped waveguide. The output port is only triggered to excite a magnetic signal when the total spin wave intensity of the two input spin waves propagating to the output port exceeds a threshold, thus achieving logical judgment and signal strength self-normalization. When the branch waveguide is a waveguide with three branches radiating outward from a single point, the multi-branch connecting waveguide is a ψ-shaped waveguide. By adjusting the microwave power of the pump signal at the output port, logical judgment and signal strength self-normalization under multiple input logic "1" and "0" conditions are achieved.

[0018] 3. In this invention, the preferred material for the multi-branch waveguide is yttrium iron garnet ferrite. In addition to meeting the requirements of high nonlinear frequency shift coefficient and low damping magnetic waveguide or thin film, this material has ultra-low magnetic damping, which significantly increases the spin wave propagation distance, supports multi-level logic gate cascading, and has a mature and compatible nanofabrication process.

[0019] 4. In this invention, it is preferred that each branch in the branch waveguide has an arc and is smoothly connected to the common waveguide through a single point. This significantly reduces the reflection and scattering loss of spin waves at the connection point, promotes the symmetrical convergence and nonlinear magneton scattering of multi-branch spin waves, thereby effectively improving the phase synchronization efficiency and constructive interference intensity, and ultimately enhancing the transmission efficiency and logic function stability of the device.

[0020] 5. In this invention, thanks to the two core characteristics of phase desensitization and signal self-normalization, the cascading method proposed in this invention only requires the fabrication of compact waveguide and antenna structures using standard micro-nano fabrication techniques, and the output signal of the previous stage can be directly connected to the next stage as an input port via a magnetic waveguide. This scheme eliminates the need for additional phase-locked loops, power amplifiers, or complex synchronization circuits, achieving deterministic state transfer and paving the way for the construction of large-scale, multi-level magnetic logic circuits. Attached Figure Description

[0021] Figure 1 A schematic diagram illustrating the structure and function of the magnetic logic gate device provided by this invention.

[0022] Figure 2 This is a schematic diagram illustrating the structure and function of the magnetic majority gate device provided by the present invention.

[0023] Figure 3 This invention provides a schematic diagram of the working principle of a magnetic logic gate device; wherein, Figure 3 In the diagram, 'a' represents the bistable window diagram of the pump antenna under AND logic, and 'b' represents the bistable window diagram of the pump antenna under AND logic.

[0024] Figure 4A schematic diagram showing the phase desensitization characteristics and signal strength self-normalization characteristics of the magnetic device provided by the present invention; wherein, Figure 3 In the diagram, 'a' represents the phase desensitization characteristic, and 'b' represents the signal strength self-normalization characteristic.

[0025] Figure 5 A schematic diagram of the structure of a magnetic integrated device constructed using the magnetic majority gate device provided in this invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0027] In a first aspect of the present invention, a magnetic logic device is provided, the structure of which includes: a multi-branch connected waveguide, an input module, and an output module. A multi-branch waveguide consists of a common waveguide with a single branch at one end and branch waveguides at the other. Each branch waveguide radiates outwards from a single fulcrum with two or three branches. Each branch is connected to the common waveguide via the fulcrum, forming a junction region at the junction. This junction allows the magnetic wavelet signals from each branch to converge and undergo nonlinear magnetic wavelet scattering, achieving phase synchronization of multiple magnetic wavelet signals. The multi-branch waveguide is a magnetic waveguide with a high nonlinear frequency shift coefficient (0.5 ~ 6 GHz) and a damping coefficient (2 × 10⁻⁶). -4 ~ 4×10 -3 .

[0028] The input module contains the same number of input ports as the branches in the multi-branch waveguide. The input ports in the input module are connected one-to-one with the branches in the branch waveguide. The output module contains output ports. The output ports in the output module are connected to the common waveguide in the branch waveguide. The output ports are equipped with pump antennas operating in the bistable window region, which are used to achieve self-normalization of logic judgment and output signal strength by adjusting the microwave power of the pump antenna.

[0029] After each branch in the branch waveguide of the magnetic logic device simultaneously receives the magnetic signal excited by the input module, the magnetic signal is transmitted and converged in the junction region of the multi-branch connecting waveguide to perform nonlinear magnetic scattering, thereby synchronizing the phase of multiple magnetic signals. Then, the phase-synchronized magnetic signal is transmitted to the output module along the common waveguide. Finally, the logic judgment and output signal strength are self-normalized by adjusting the microwave power of the pump antenna.

[0030] Preferably, when the branch waveguide is a waveguide with two branches radiating outward from a single limb, such as... Figure 1 As shown, an example of a magnetic logic device, i.e., a magnetic logic gate device, is illustrated by a multi-branched Y-shaped waveguide. It includes a dual-input port 11 of the input module, a Y-shaped waveguide 12, and an output port 13 of the output module. The two input ports of the input module are respectively connected to the two arms of the Y-shaped waveguide 12, and one output port of the output module is connected to the end of the Y-shaped waveguide 12. A pump antenna operating in the bistable window region is provided on the output port.

[0031] The input module provides a preset microwave signal and excites a magneton signal, while the output module provides a pump microwave signal. Due to deep nonlinearity, it operates within a bistable window region. The output port is only triggered to excite a magneton signal when the total spin wave intensity of the two input spin waves propagating to the output port exceeds a threshold, thus achieving logical judgment and signal strength self-normalization.

[0032] The Y-shaped waveguide 12 is a magnetic waveguide deposited on an insulating substrate, possessing a high nonlinear frequency shift coefficient and a low damping coefficient. This Y-shaped waveguide 12 is used to transmit magnetic signals. Strong nonlinear magnetic particle scattering occurs at the Y-shaped junction. The scattered magnetic particles have random phases, but spin waves with different phases at different input terminals achieve phase synchronization at the junction through nonlinear scattering, thereby achieving phase desensitization of the output signal to the input port signal.

[0033] Preferably, when the branch waveguide is a waveguide with three branches radiating outward from a single spur, such as... Figure 2 As shown, an example of a magnetic logic device with a multi-branched waveguide being a ψ-shaped waveguide, i.e., a magnetic majority gate device, is illustrated. It includes three input ports 21 of an input module, a ψ-shaped waveguide 22, and an output port 23 of an output module. The three input ports 21 of the input module are respectively connected to the three arms of the ψ-shaped waveguide, and one output port of the output module is connected to the end of the ψ-shaped waveguide. A pump antenna operating in the bistable window region is provided on the output port.

[0034] The magnetic majority gate device extends the dual-input port of the logic gate device to a three-input port, and achieves logic judgment and signal strength self-normalization under multi-input logic "1" and "0" by adjusting the microwave power of the pump signal of the output port.

[0035] Preferably, each branch in the branch waveguide has an arc and is smoothly connected to the common waveguide through a spur point. This significantly reduces the reflection and scattering loss of spin waves at the connection point, promotes the symmetrical convergence and nonlinear magneton scattering of multi-branch spin waves, thereby effectively improving phase synchronization efficiency and constructive interference intensity, and ultimately enhancing the transmission efficiency and logic function stability of the device.

[0036] In this invention, the materials used for magnetic waveguides with high nonlinear frequency shift coefficients and low damping coefficients include, but are not limited to, yttrium iron garnet ferrite, cobalt iron boron alloy, iron cobalt alloy, or nickel iron alloy. In this embodiment, the multi-branch connection waveguide is preferably made of yttrium iron garnet ferrite (YIG), which has ultra-low magnetic damping that significantly increases the propagation distance of spin waves, supports multi-level logic gate cascading, and has a mature and compatible nanofabrication process.

[0037] In this invention, the thickness of the multi-branch connecting waveguide is 10 nm to 100 nm, wherein the width of each branch waveguide and the common waveguide is 10 nm to 1 nm. m.

[0038] In this invention, both the input port and the output port are made of conductive metal electrode materials, selected from Au, Cu, or Pt electrodes, with a width of 2 to 5 mm. m, with a thickness of 100 ~ 500 nm.

[0039] In this invention, the adhesive layer width is 2 to 5 mm. The gold layer has a thickness of 3 to 10 nm and the adhesion layer material is selected from Ti, Ta, or Cr. It is used to enhance the adhesion between the gold layer and the surface of the magnetic material, prevent the Au layer from peeling off due to thermal or mechanical stress, and avoid the adhesion layer atoms from penetrating into the magnetic material and affecting the magnetic properties.

[0040] In this invention, the insulating substrate is selected from GGG, SGGG, or SiO2, and its thickness is 500~1000 mm. m.

[0041] In a second aspect of the invention, an integrated magnetic device is provided, such as Figure 5 As shown, the device includes the magnetic logic devices described above, which are cascaded via pump antennas. The output port of the previous level magnetic logic device in the integrated magnetic logic device is directly connected to the next level magnetic logic device via a waveguide as its input port. Furthermore, in an integrated magnetic logic device, the multi-branch connection waveguides in all magnetic logic devices are of the same type.

[0042] In a third aspect of the invention, a method of using a magnetic logic device is provided, wherein when the branch waveguide is a waveguide with two branches radiating outward from a single limb, the method includes: Pulse signals are applied simultaneously to multiple input ports of the input module to excite magnetic signals. The magnetic signals are transmitted through two branches in the branch waveguide and converged in the junction region of the multi-branch connecting waveguide to perform nonlinear magnetic scattering, thereby synchronizing the phase of the two magnetic signals. Then, the phase-synchronized magnetic signals are transmitted to the output module along the common waveguide. The activation threshold is dynamically configured by adjusting the microwave power of the pump antenna to realize OR and AND logic. Specifically, the activation threshold is dynamically configured by adjusting the microwave power of the pump antenna to realize OR and AND logic, including: realizing OR logic by adjusting the threshold to be lower than the spin wave intensity of any one of the two magnetic signals at the output port; or realizing AND logic by adjusting the threshold to be higher than the spin wave intensity of any one of the two magnetic signals at the output port and lower than the total spin wave intensity of the two magnetic signals at the output port.

[0043] In a fourth aspect of the invention, a method of using a magnetic logic device is provided, wherein when the branch waveguide is a waveguide with three branches radiating outward from a single limb, the method includes: Pulse signals are simultaneously applied to multiple input ports of the input module to excite magnetic signals. The magnetic signals are transmitted through three branches in the branch waveguide and converged in the junction region of the multi-branch connecting waveguide to achieve nonlinear magnetic scattering. The phase synchronization of the three magnetic signals is then achieved. The phase-synchronized magnetic signals are then transmitted to the output module along the common waveguide. By adjusting the microwave power of the pump antenna, the activation threshold is dynamically configured to be higher than the spin wave intensity of any one of the three magnetic signals at the output port and lower than the total spin wave intensity of any two of the three magnetic signals at the output port, thus realizing a majority gate.

[0044] In a fifth aspect of the invention, a method for integrating and cascading magnetic devices is provided, employing standard micro / nano fabrication techniques to prepare compact waveguide and pump antenna structures. Based on pre-defined logical function requirements, the input and output ports of each sub-magnetic logic device unit (such as the aforementioned magnetic logic device or majority gate device) within the integrated magnetic device are first configured. After preliminary logical processing in the previous-level magnetic logic device, the output signal is directly connected to the next-level magnetic logic device via a waveguide as its input port. This process continues step-by-step until the magnetic signal has passed through all cascaded sub-magnetic logic devices. Finally, the magnetic signal, after multi-stage logical processing, is output from the output port of the last-level sub-magnetic logic device in the integrated magnetic device. Benefiting from the deep nonlinear effects utilized by each sub-magnetic logic device unit, this method achieves self-normalization of signal strength and phase desensitization, effectively avoiding phase disturbances and strength attenuation during cascaded transmission, supporting efficient and lossless magnetic signal transmission and complex logic operations. This method is beneficial for achieving compactness and scalability of all-magnetic integrated circuits, and promotes the application of magnetic computing in the field of low-power wave processing devices.

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0046] Example 1: The following is an example of a magnetic logic gate device. Figure 1 The diagram illustrates the structure and function of the magnetic logic gate device based on the present invention, including dual input ports 11, a Y-shaped waveguide 12, and an output port 13. The dual input ports 11 and 13 are connected to the two arms and the end of the Y-shaped waveguide 12 via adhesive layers. The Y-shaped waveguide is made of yttrium iron garnet (YIG) material. The YIG thin film (100 nm thick) is grown on a 500 μm thick (111) oriented gadolinium gallium garnet (GGG) single-crystal substrate using liquid phase epitaxy (LPE) technology. The GGG substrate provides excellent lattice matching, ensuring low magnetic damping and high crystal quality of the YIG thin film. The YIG thin film is patterned into a Y-shaped waveguide with a width of 800 nm and a single-arm length of 50 μm using electron beam exposure and ion beam etching processes. The dual input ports 11 and 13 have identical electrode structures, each consisting of a 10 nm thick titanium (Ti) adhesion layer and a 100 nm thick gold (Au) conductive layer, fabricated using a lift-off process, with an electrode width of 2 μm. The Ti layer enhances the adhesion between the Au layer and YIG, preventing peeling and suppressing interface diffusion; the Au layer provides a low-loss microwave current path. The entire device operates under an out-of-plane static magnetic field of approximately 330 mT to ensure that the YIG waveguide reaches magnetic saturation.

[0047] Figure 3 This is a schematic diagram illustrating the working principle of this embodiment. Figure 3 As shown, a microwave pulse signal with the same frequency as the input is applied to the pump antenna at the output port. By adjusting the microwave power, it is brought to the ground state within the nonlinear magnetic bistable window. Due to the energy barrier between the ground state and the excited state, the magnetic signal cannot be directly excited. Then, a microwave pulse signal with a determined frequency and power is input to the dual input port 11 to excite the magnetic signal. The energy provided by the total spin wave intensity transmitted to the output port exceeds the energy barrier, causing the magnetic signal to switch from the ground state to the excited state, thereby realizing the output of the magnetic signal. By adjusting the microwave power of the pump antenna at the output port, the activation threshold is dynamically configured, thus realizing OR and AND logic.

[0048] Specifically, in this example, the pulse period of the pump antenna at output port 13 is 1. s, width 0.8 s, with a frequency of 5.6 GHz and a power of 4 dBm, is at the bottom of the bistable window, i.e., the ground state, as shown below. Figure 3 As shown in 'a', a spin wave signal cannot be excited. Then, the dual-input port 11 has an input frequency of 5.6 GHz, a power of 15 dBm, and a pulse period of 1... s, width 0.8 The microwave pulse of s, due to the low microwave power of the pump antenna, results in a high energy threshold for both the ground and excited states. In the case of dual inputs only, the total spin wave intensity transmitted to the output port provides energy exceeding the threshold, triggering the output port to excite the magnetic signal and realize the AND logic function. Because this fabrication process utilizes a high-quality and low-magnetic-damping YIG waveguide, the spin wave signal at the input port can be transmitted well. Furthermore, the microwave power of the pump antenna at output port 13 is changed to 9 dBm, such as... Figure 3 As shown in b, the energy thresholds of the ground state and excited state are reduced so that the intensity of the spin wave signal excited after any one of the two input microwave signals is sufficient to overcome the threshold. The output port is then triggered to excite the magneton signal, thereby realizing the OR logic function. Furthermore, in this embodiment, the output signal has phase desensitization characteristics and signal strength self-normalization characteristics for the input port signal. Figure 4 This is a schematic diagram showing the phase desensitization characteristics and signal intensity self-normalization characteristics of the magnetic device. For example... Figure 4 As shown in Figure 'a', in AND logic mode, microwave signals are simultaneously applied to both input ports to excite spin waves. With the input power and frequency fixed, and then the phase of the microwave signal at one of the ports is changed, the results show that the spin wave intensity at the output port does not change with the phase change, i.e., phase desensitization characteristic. Furthermore, the signals measured before and after the output port demonstrate that the spin wave signal at the output port significantly amplifies the signal transmitted at the input port. (See Figure 'a'). Figure 4As shown in Figure b, the spin wave intensity relationship between the dual input ports and the output port is illustrated. Although the input signal suffers losses during transmission due to sample preparation, the process of triggering the pump antenna to excite the magnetic signal amplifies the signal to a fixed output intensity, meaning the output intensity matches the input intensity, thus compensating for the magnetic signal propagation loss. It should be noted that the logical operation function in this example can also be achieved with different microwave pulse widths and periods at the dual input ports 11 and 13.

[0049] Example 2: Figure 2 This is a schematic diagram illustrating the structure and function of the magnetic majority gate device based on the present invention. This device expands the dual-input port to a three-input port based on the logic gate device of Embodiment 1. For example... Figure 2 As shown, the system includes three input ports 21, a ψ-shaped waveguide 22, and an output port 23. By adjusting the microwave signal power of the pump antenna at the output port, logic judgment and signal strength self-normalization under multiple input logic "1" and "0" conditions are achieved. Specifically, its working principle is similar to that of Embodiment 1. By adjusting the microwave pulse power of the pump antenna at the output port to 1.6 dBm, the microwave power of the pump antenna is relatively low, resulting in excessively high energy thresholds for the ground state and excited state. When at least two input ports excite spin waves ("1"), the total input spin wave intensity exceeds the activation threshold, triggering the antenna to switch to the excited state and exciting a spin wave to output logic "1". Conversely, if only zero or one input is "1", the total intensity is insufficient to trigger the antenna, and an output "0" is generated. This embodiment demonstrates that the architecture of the present invention is easily expandable to more inputs to achieve more complex logic functions.

[0050] Example 3: Figure 5 This is a schematic diagram of the structure of a magnetic integrated device constructed based on the magnetic majority gate of the present invention. Figure 5As shown, the integrated structure consists of three magnetic majority gate devices 51, 52, and 53 connected in series. Its core lies in the method of cascading directly through a pump antenna: the output port signal of the previous-stage majority gate device (e.g., 51) is directly connected to the next-stage majority gate device (e.g., 53) as its input port via a magnetic waveguide. Specifically, two of the three inputs of the previous-stage device 51 are "1", and according to the principle of Embodiment 2, its output port will generate a self-normalized "1" signal. This signal is directly transmitted to the next-stage device 53 via the magnetic waveguide as one of its inputs. Two of the three inputs of the previous-stage device 52 are "0", and its output is "0". This "0" signal is transmitted to the next-stage device 53 via the magnetic waveguide as its second input. At this time, the third input of the next-stage device 53 is set to "1". Therefore, for the next-stage device 53, the three inputs it receives are "1" (from the previous stage), "0" (from the previous stage), and "1" (preset), that is, two "1"s and one "0". According to majority logic, its output should be "1". Conversely, if the third input is "0", then the three inputs are "1", "0", and "0", the majority vote result is "0", and the device outputs "0". This embodiment successfully demonstrates how to combine simple majority gates into complex combinational logic circuits through the cascading method of the present invention, fully verifying the feasibility of the present invention in realizing large-scale magnetic integrated circuits.

[0051] The technical solution of this invention utilizes the geometric design of waveguides and the nonlinear characteristics of materials to construct an inherent phase desensitization mechanism and signal strength self-normalization characteristics. This eliminates the influence of input signal phase and magnetic signal attenuation on logic functions, significantly improving the robustness of logic operations. Furthermore, dynamic reconfiguration of AND and OR logic functions can be achieved simply by adjusting the pump power of the pump antenna, significantly enhancing the flexibility and practicality of the device. Building upon this, the invention also proposes a method for cascading directly through pump antennas without the need for external repeaters, effectively solving the cascading challenge in wave-based information processing. This lays a solid foundation and demonstrates enormous potential for its widespread application in neuromorphic computing, low-power logic operations, and microwave signal processing.

[0052] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this invention and its equivalents, this invention also intends to include these modifications and variations. The above-described embodiments are merely preferred embodiments given to fully illustrate this invention, and their scope of protection is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this invention are all within the scope of protection of this invention.

Claims

1. A magnetic logic device, characterized in that, include: Multi-branch connection to waveguide, input module and output module; The multi-branch connecting waveguide has a common waveguide with a single branch at one end and a branch waveguide at the other end. Each branch waveguide radiates outward from a fulcrum with two or three branches. Each branch is connected to the common waveguide through the fulcrum, forming a junction region at the junction. This allows the magnetic wave signals from each branch to converge in the junction region, resulting in nonlinear magnetic wave scattering and phase synchronization of multiple magnetic wave signals. The multi-branch connecting waveguide is a magnetic waveguide with a high nonlinear frequency shift coefficient (0.5 ~ 6 GHz) and a damping coefficient (2 × 10⁻⁶). -4 ~ 4×10 -3 ; The input module includes the same number of input ports as the branches in the multi-branch waveguide. The input ports in the input module are connected one-to-one with the branches in the branch waveguide. The output module includes an output port, which is connected to a common waveguide in the branch waveguide. The output port is equipped with a pump antenna operating in a bistable window region, which is used to achieve self-normalization of logic judgment and output signal strength by adjusting the microwave power of the pump antenna.

2. The magnetic logic device according to claim 1, characterized in that, When the branch waveguide is a waveguide with two branches radiating outward from a single point, the multi-branch connecting waveguide is a Y-shaped waveguide; when the branch waveguide is a waveguide with three branches radiating outward from a single point, the multi-branch connecting waveguide is a ψ-shaped waveguide.

3. The magnetic logic device according to claim 1, characterized in that, The materials used in the multi-branch connecting waveguides include yttrium iron garnet ferrite, cobalt iron boron alloy, iron cobalt alloy, or nickel iron alloy.

4. The magnetic logic device according to claim 1, characterized in that, Each branch in the branch waveguide is curved and is smoothly connected to the common waveguide through a spur point.

5. The magnetic logic device according to claim 1, characterized in that, The thickness of each branch in the branch waveguide and the common waveguide are each 10 nm to 100 nm, and the width is each 10 nm to 1. m.

6. The magnetic logic device according to claim 1, characterized in that, The input ports of the input module are connected one-to-one with the branches in the branch waveguide via adhesive layers, and the output ports of the output module are connected to the common waveguide in the branch waveguide via adhesive layers; wherein, the adhesive layer is made of Ti, Ta, or Cr, and has a width of 2 to 5 mm. m, with a thickness of 3 ~ 10 nm.

7. An integrated magnetic device, characterized in that, The integrated magnetic logic device comprises multiple magnetic logic devices as described in any one of claims 1-7, which are cascaded via pump antennas thereon. The output port of the previous level magnetic logic device in the integrated magnetic logic device is directly connected to the next level magnetic logic device as its input port via a waveguide. Furthermore, in one integrated magnetic logic device, the multi-branch connecting waveguides in all magnetic logic devices are of the same type.

8. A method of using the magnetic logic device as described in any one of claims 1-6, characterized in that, When the branch waveguide is a waveguide with two branches radiating outward from a spur point, the method includes: Pulse signals are simultaneously applied to multiple input ports of the input module to excite magneton signals. The magneton signals are transmitted through two branches in the branch waveguide and converged in the junction region of the multi-branch connecting waveguide to perform nonlinear magneton scattering, thereby synchronizing the phase of the two magneton signals. Then, the phase-synchronized magneton signals are transmitted to the output module along the common waveguide. The activation threshold is dynamically configured by adjusting the microwave power of the pump antenna to realize OR and AND logic. Specifically, the OR and AND logic is implemented by dynamically configuring the activation threshold through adjusting the microwave power of the pump antenna. This includes: implementing the OR logic function by adjusting the threshold to be lower than the spin wave intensity of any one of the two magnetic signals at the output port; or implementing the AND logic function by adjusting the threshold to be higher than the spin wave intensity of any one of the two magnetic signals at the output port and lower than the total spin wave intensity of the two magnetic signals at the output port.

9. A method of using the magnetic logic device as described in any one of claims 1-6, characterized in that, When the branch waveguide is a waveguide with three branches radiating outward from a spur point, the method includes: Pulse signals are simultaneously applied to multiple input ports of the input module to excite magnetic signals. The magnetic signals are transmitted through three branches in the branch waveguide and converged in the junction region of the multi-branch connecting waveguide to achieve nonlinear magnetic scattering, thereby synchronizing the phase of the three magnetic signals. Then, the phase-synchronized magnetic signals are transmitted to the output module along the common waveguide. By adjusting the microwave power of the pump antenna, the activation threshold is dynamically configured to be higher than the spin wave intensity of any one of the three magnetic signals at the output port and lower than the total spin wave intensity of any two of the three magnetic signals at the output port, thus realizing a majority gate.

10. A method for integrating the integrated magnetic device as described in claim 7, characterized in that, Compact waveguide and antenna structures are fabricated using standard micro-nano fabrication techniques. The output port signal of the previous stage magnetic logic device is directly connected to the next stage magnetic logic device as its input port through the pump antenna of the magnetic logic device. By utilizing the signal strength self-normalization characteristic and phase desensitization characteristic of deep nonlinear effect, deterministic state transmission without phase sensitivity and magnetic signal attenuation is achieved, supporting the cascading of multi-stage magnetic logic operations.

Images