Spin current filter with controllable polarization direction based on chromium triiodide

A technology of chromium triiodide and spin current, which is applied in the direction of piezoelectric devices/electrostrictive devices, circuits, electrical components, etc., and can solve the problem that the spin filter cannot regulate the spin direction of the spin current

Active Publication Date: 2019-03-26
INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS
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Problems solved by technology

[0004] The invention provides a spin current filter with controllable polarization direction based on chromium triiodide

Method used

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  • Spin current filter with controllable polarization direction based on chromium triiodide
  • Spin current filter with controllable polarization direction based on chromium triiodide
  • Spin current filter with controllable polarization direction based on chromium triiodide

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Embodiment Construction

[0026] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0027] A spin current filter with controllable polarization direction based on chromium triiodide provided by an embodiment of the present invention, see figure 1 As shown, it includes: a chromium triiodide magnetic film 10 , a piezoelectric crystal 20 and a power supply 30 .

[0028] The positive pole of the power supply 30 is connected to one side of the piezoelectric crystal 20 perpendicular to the direction of the electric field, and the negative pole of the power supply 30 is connected to the other side of the piezoelectric crystal 20 perpendicular to the direction of the electric field.

[0029] One side of the chromium triiodide magnetic film 10 in the first ...

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Abstract

The invention provides a spin current filter with a controllable polarization direction based on chromium triiodide. The filter comprises a chromium triiodide magnetic film, a piezoelectric crystal and a power supply. A positive electrode of the power supply is connected to one side of the piezoelectric crystal perpendicular to an electric field direction, and a negative electrode of the power supply is connected to the other side of the piezoelectric crystal perpendicular to the electric field direction. One side of the chromium triiodide magnetic film in a first direction is fixed, and the other side of the chromium triiodide magnetic film in the first direction is fixedly connected to one side of the piezoelectric crystal perpendicular to a deformation direction. A side of the chromiumtriiodide magnetic film in a second direction is used for pass current to be spin-filtered, and a plane formed by the first direction and the second direction is perpendicular to the film thickness direction of the chromium triiodide magnetic film. According to the spin current filter, a CrI3 film is stretched through the piezoelectric crystal, non-spin-polarized current passing through the CrI3 film is filtered into spin-polarized current with only one direction, and the spin-polarized direction of output current can be controlled.

Description

technical field [0001] The invention relates to the technical field of spin electronics, in particular to a spin current filter with controllable polarization direction based on chromium triiodide. Background technique [0002] Electrons are characterized by a number of eigenvalues, in particular by their angular momentum or "spin". Due to the uncertainty principle at the atomic scale, the spin of an electron can only be measured along one observable quantity or direction, and the value of the electron spin can be positive or negative. These states are called "spin-up" and "spin-down," respectively, and information can be stored using the quantum spin property of an electron's spin. [0003] A spin filter refers to a device that filters out spin-up (or spin-down) electrons, leaving only spin-down (or spin-up) electrons, a relatively simple and commonly used method It is to directly apply a magnetic field of a certain intensity to various materials (such as semiconductor he...

Claims

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Application Information

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IPC IPC(8): H01L29/66H01L41/09H01L43/10
CPCH01L29/66984H10N30/206H10N50/85
Inventor 张平李梦蕾周梅郑法伟
Owner INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS
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