Electrically Controllable Van Der Waals Antiferromagnetic Spin Valve,Physical Review Applied

当前位置： X-MOL 学术 › Phys. Rev. Appl. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Electrically Controllable Van Der Waals Antiferromagnetic Spin Valve
Physical Review Applied ( IF 3.8 ) Pub Date : 2021-07-13 , DOI: 10.1103/physrevapplied.16.014032
Xuechao Zhai _{1,

2} , Ziming Xu ₃ , Qirui Cui ₄ , Yingmei Zhu ₄ , Hongxin Yang _{4,

5} , Yaroslav M. Blanter ₂

Affiliation

We propose a spin valve that is based on van der Waals antiferromagnetism and is fully electrically controlled. The device is composed of two antiferromagnetic terminals that allow for vertical bias control and a linked central scattering potential region. The magnetoresistance varies significantly when the bias orientations in two terminals are switched from parallel to antiparallel, because this switch induces a mismatch of the bands for the same spin projection in different parts of the system. It is shown from density-functional calculations that bilayer graphene encapsulated by two atomic layers of

{Cr}_{2} {Ge}_{2} {Te}_{6}

provides a material platform to realize the antiferromagnetism, which is robust against the required vertical electric fields.

中文翻译：

电控范德华反铁磁自旋阀

我们提出了一种基于范德华反铁磁性并完全电控的自旋阀。该设备由两个反铁磁终端组成，允许垂直偏置控制和链接的中心散射电位区域。当两个端子的偏置方向从平行切换到反平行时，磁阻会发生显着变化，因为这种切换会导致系统不同部分中相同自旋投影的带不匹配。密度泛函计算表明，双层石墨烯被两个原子层包裹