Electrically Controllable Van der Waals Antiferromagnetic Spin Valve

Xuechao Zhai, Ziming Xu, Qirui Cui, Yingmei Zhu, Hongxin Yang, Yaroslav M. Blanter

Research output: Contribution to journalArticleScientificpeer-review

5 Downloads (Pure)

Abstract

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 Cr2Ge2Te6 provides a material platform to realize the antiferromagnetism, which is robust against the required vertical electric fields.

Original languageEnglish
Article number014032
JournalPhysical Review Applied
Volume16
Issue number1
DOIs
Publication statusPublished - 2021

Fingerprint

Dive into the research topics of 'Electrically Controllable Van der Waals Antiferromagnetic Spin Valve'. Together they form a unique fingerprint.

Cite this