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Stress regulation and control unit structure and method for spin wave transmission characteristics

A technology of transmission characteristics and stress regulation, applied in the parts of electromagnetic equipment, the manufacture/processing of electromagnetic devices, etc., can solve the problems of high energy consumption and complex structure, achieve low efficiency, solve high energy consumption, solve heat loss and static The effect of power consumption

Active Publication Date: 2020-10-30
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the inherent high energy consumption and complex structure of the traditional technology based on the current-carrying line to generate a magnetic field to control the spin, the present invention proposes a stress control unit structure and method with the characteristics of spin wave transmission, which can control the spin wave through the electric field The change of the magnetic anisotropy of the waveguide can efficiently and quickly realize the local precise control of the spin wave transmission characteristics, which provides the possibility for the practical application of magnetononics devices with ultra-low power consumption and compatibility with traditional CMOS processes

Method used

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  • Stress regulation and control unit structure and method for spin wave transmission characteristics
  • Stress regulation and control unit structure and method for spin wave transmission characteristics
  • Stress regulation and control unit structure and method for spin wave transmission characteristics

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Embodiment 1

[0028] This embodiment proposes a stress control unit structure and method for spin wave transmission characteristics, and controls spin wave phase, amplitude and other related features so as to be applied to spin electronic devices to realize various logic functions. Such as figure 1 As shown, the control unit is composed of a substrate layer 6 , a spin wave guide layer 7 , a bottom electrode layer 5 , a control layer 1 , a top electrode 2 and a protective layer 8 . The attached drawings are schematic diagrams, and the sizes and thicknesses of the functional layers involved are not actual sizes, and there are many choices of materials, depending on actual needs.

[0029] The regulating unit structure proposed by the present invention can be applied to various spin wave waveguide structures, depending on specific applications, and the size of the unit structure is not limited. Most of the waveguide materials are ferromagnetic materials with magnetostrictive effect, which can ...

Embodiment 2

[0035]In this embodiment, a device unit structure based on spin wave propagating in cobalt-iron-boron (CoFeB) is taken as an example to specifically illustrate the structure, function and application of the present invention. Refer to attached image 3 , give a typical structural embodiment of the present invention: a strip-shaped spin-wave waveguide.

[0036] In this example, the main structure for adjusting the spin wave transmission characteristics uses cobalt-iron-boron (CoFeB) material with a length of 2000 nm, a width of 100 nm, and a thickness of 0.8 nm. The propagation mode of the spin wave is forward bulk wave, that is, the mode in which the spin wave propagation direction is perpendicular to the direction of the magnetic field. The bottom is the control layer, the top is the spin wave waveguide layer, and the top double electrode is made of conductive material copper (Cu), which is located on both sides of the magnetic material and is symmetrical. The control layer...

Embodiment 3

[0049] Refer to attached Figure 7 , provide four typical logic application embodiments of the present invention: single-channel logic structure, single-channel series logic structure, dual-channel parallel logic structure, and dual-channel series-parallel logic structure. What needs to be explained here is: 1. This implementation The example is not limited to the above logical structure, there can be more branches and control unit combination, 2, a single control unit can adjust the spin wave amplitude, phase and other functions through voltage, in the logic structure proposed in this embodiment It is not limited to using one of the functions, but may be any one of the functions or any combination of multiple functions. In order to realize more complex logical calculation functions.

[0050] The logic device is based on the structure proposed by the present invention, that is, a stress regulation unit structure with spin wave transmission characteristics and a spin wave tran...

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Abstract

The invention discloses a stress regulation and control unit structure and method for spin wave transmission characteristics. The method comprises the following steps: electric fields are applied to electrodes attached to the upper and lower surfaces of a control layer; the control layer is made to generate stress changes, the stress changes are transmitted to a spin wave waveguide layer attachedto the control layer through interface contact, due to the inverse magnetostriction effect, the magnetic anisotropy of materials of the spin wave waveguide layer changes, the regulation and control over spin wave transmission characteristics are achieved, and the control layer is made of the ferroelectric or piezoelectric materials. According to the invention, the continuous change of the magneticanisotropy of the spin wave waveguide can be controlled through the electric fields, the local accurate control of the spin wave transmission characteristics can be efficiently and quickly realized,and the possibility is provided for the practical application of a magneto-oscillator device with ultralow power consumption and compatibility with a traditional CMOS process flow.

Description

technical field [0001] The present invention relates to the technical field of spin electronics, and more specifically, to a structure and method of a stress regulating unit with spin wave transmission characteristics. Background technique [0002] With the development of spin electronics, it has become possible for spin logic devices to replace traditional CMOS devices in information storage and computing. For example, the invention of application number CN201610553896.5 discloses a method for controlling spin wave transmission. Applying an electric field to the spin-wave waveguide structure can effectively change the exchange interaction strength inside the magnetic waveguide material. Controlling the exchange constant by the electric field can achieve the purpose of regulating the dispersion relationship of the spin wave and then controlling the transmission of the spin wave. Since the propagation and movement of spin waves can theoretically achieve Joule-free heat gener...

Claims

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Application Information

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IPC IPC(8): H01L43/12H01L43/02
CPCH10N50/80H10N50/01
Inventor 周浩淼年迪青施胜宾朱明敏邱阳杨浛郁国良
Owner CHINA JILIANG UNIV
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