Spin Wave Generation via Magnetic Vortex Antivortex Collision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for generating spin waves, particularly dipole-exchange spin waves with wavelengths of several nm to several μm and frequencies of several hundreds of MHz to several tens of GHz, are limited in their ability to produce strong spin waves in a local area, which is essential for ultra-high speed information processing, as existing magnetostatic wave devices cannot generate spin waves locally due to the inverse proportionality of the induction field with distance.
Innovation Solution
A method and device that supply energy to magnetic materials with magnetic vortex and antivortex spin structures to generate spin waves locally, utilizing magnetic field, thermal energy, or spin torque to produce dipole-exchange spin waves with high frequency and amplitude, allowing for local generation and propagation of spin waves in a nano-scale area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a high-frequency alternating current is flowed through a conducting wire to generate spin waves, then spin waves can be generated and propagated, but the induction field extends to all areas of the device due to inverse proportionality with distance, preventing local generation
Solution Approach 1:
The device segments the spin wave generation function into multiple independent nano-scale conducting wires, each capable of generating spin waves locally. This segmentation allows specific regions to be activated independently, solving the problem of unwanted widespread field distribution while maintaining generation capability.
Solution Approach 2:
The patent implements local quality by designing conducting wires with nano-scale dimensions (several nm to several hundreds of nm) that concentrate the induction field in specific local areas. This enables different regions of the device to have different functional qualities, with only selected areas generating spin waves when needed.
2Speed
If the wavelength of spin waves is reduced to several nm to achieve ultra-high speed processing, then processing speed increases, but the generation area must be precisely controlled to several nm to several hundreds of nm
Solution Approach 1:
The patent replaces conventional mechanical or electromagnetic field-based generation methods with spin wave generation in magnetic materials. This substitution enables precise control at the nano-scale level, achieving the required several nm to several hundreds of nm generation area control while maintaining ultra-high processing speeds through the inherent properties of spin wave propagation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the generation of strong dipole-exchange spin waves with high frequency and amplitude in a local nano-scale area, facilitating ultra-high speed information processing and potential replacement for CMOS-based methods by enabling efficient logic operations using spin waves.
Implementation Method 1
supplying energy to a magnetic material in which magnetic vortex and magnetic antivortex spin structures exist separately or together; and locally generating spin waves
Implementation Method 2
supplying energy to a magnetic material in which magnetic vortex and magnetic antivortex spin structures exist separately or together; and locally generating spin waves
Implementation Method 3
supplying energy to a magnetic material in which magnetic vortex and magnetic antivortex spin structures exist separately or together; and locally generating spin waves
Implementation Method 4
magnetic vortex and magnetic antivortex spin structures exist separately or together; locally generating spin waves from a core of the magnetic vortex or the magnetic antivortex spin structure or while two vortexes collide with each other and annihilate
Data Source
AI summary
Provided are a method of generating strong spin waves, a method of simultaneously generating spin waves and electromagnetic waves, a logic operation device using spin waves, a variety of spin wave devices employing the same, and a method of controlling phases of spin waves. In the method of generating spin waves, strong spin waves are generated by supplying various shapes of energies to a magnetic material in which a magnetic vortex and magnetic antivortex spin structures exist separately or together. In the logic operation device, wave factors of frequency, wavelength, amplitude, and phase of a spin wave generated by the method of generating spin waves are controlled and wave characteristics such as reflection, refraction, transmission, tunneling, superposition, interference, and diffraction are used.