Electric field regulation and control-based two-dimensional spinning electronic device and preparation method thereof

Abstract

The invention discloses an electric field regulation and control-based two-dimensional spinning electronic device and a preparation method thereof, and relates to electric field regulation and controlfor generation and polarization rates of spinning currents. The device structure comprises a sandwich structure of a first BN two-dimensional material / ferromagnetic metal-doped III-VI group chalcogenide two-dimensional material / second BN two-dimensional material, a transparent electrode connected with the first BN two-dimensional material and the second BN two-dimensional material, and a channelelectrode connected with the III-VI group chalcogenide two-dimensional material; the ferromagnetic metal is doped in crystal lattice displacement position or gap position of the III-VI group chalcogenide two-dimensional material, so that the electrons of the III-VI group chalcogenide two-dimensional material are subjected to spinning polarization; the spin-polarized electrons generate a spin current through a channel loop under excitation of the incident laser, and the magnetic structure of the ferromagnetic metal-doped III-VI group chalcogenide two-dimensional material is regulated to be converted between ferromagnetic coupling and anti-ferromagnetic coupling through an externally applied perpendicular electric field, so that the polarization rate of the spin current can be regulated within the range of 0-100%, and the two-dimensional spinning electronic device with controllable polarization rate is formed.

Description

technical field [0001] The invention relates to a spintronic device and a preparation method thereof, in particular to a spintronic device and a preparation method thereof of two-dimensional materials of ferromagnetic metal-doped III-VI chalcogenides regulated by an electric field. Background technique [0002] Spintronics explores the possibility of developing a new generation of electronic products based on the spin of electrons instead of the traditional electron charge. Spintronic devices have the advantages of non-volatility, fast data processing speed, high integration density and low power consumption, etc., and become a development trend of electronic devices. The methods for generating spin current mainly include the electrical injection method based on the spin Hall effect, the lateral nonlocal geometric injection method using ferromagnetic electrodes, and the light injection method using polarized light irradiation: (1) Based on the spin Hall effect Effect of ele...

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Problems solved by technology

[0003] In view of the design requirements of spintronic devices and the regulation of polarizability, the present invention proposes a two-dimensional spintronic device based on the electric field regulation of two-dimensional materials of III-VI chalcogenides doped with ferromagnetic metals and its The preparation method, the device adopts the electrical control method, which can solve the problem of generating spin current under the condition of strong magnetic field or low temperature

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