Spin wave logic device based on Bloch-type domain wall

Abstract

The invention discloses a spin wave logic device based on a Bloch type domain wall, and belongs to the technical field of magnetic oscillator devices. The spin wave logic device comprises a bent domain wall waveguide, a microstrip antenna for exciting spin waves and a receiving antenna, wherein the bent domain wall waveguide comprises a hard magnetic layer and a soft magnetic layer positioned on the hard magnetic layer, the microstrip antenna for exciting spin waves is fixedly connected with two ends of the bent domain wall waveguide, and the receiving antenna is positioned on a symmetry axisof the bent domain wall waveguide and is fixedly connected with the soft magnetic layer of the bent domain wall waveguide. According to the spin wave logic device provided by the invention, the spin wave transmission is based on the Bloach-type domain wall waveguide, and the hard magnetic layer has an influence on the effective field distribution of the soft magnetic layer through an exchange coupling effect, so that the soft magnetic layer forms a nano-scale Bloach-type domain wall. Therefore, external field energy input is not needed during spin wave transmission, the energy consumption of the system is greatly reduced, and meanwhile, the anti-interference performance of spin waves is enhanced.

Description

technical field [0001] The invention belongs to the technical field of magnon devices, and in particular relates to a spin wave logic device based on a Bloch-type domain wall controlled by a magnetic field. Background technique [0002] Traditional CMOS devices use carriers to transmit and process information, but with the miniaturization of devices, their performance is close to the physical limit, because in the high-frequency, low-scale environment, its manufacturing technology, production cost and High power consumption during operation limits its future development. Therefore, the development of new ultra-CMOS devices, that is, "non-charge devices" will be the only way for the development of integrated circuits in the future. As an alternative approach, the development of magnon devices holds great potential and advantages. Magnon is the quantum state of spin wave, which is generated by the resonance excitation of ordered magnetic materials. It can be applied to signa...

AI Technical Summary

Problems solved by technology

However, this kind of waveguide is mainly based on the structure of Neel-type domain walls, and the spin waves transmitted by it have non-reciprocity, that is, at the same excitation frequency, the spin waves propagate along the positive and negative directions of the domain walls with Different amplitudes and speeds make it difficult to apply it to magnon systems and make devices with logic functions

In addition, its spin wave transmission speed is low, it is difficult to design devices with high transmission rate function

Images