Electrically Controlled Spin Injection from Giant Rashba Spin-Orbit Conductor BiTeBr
Artikel i vetenskaplig tidskrift, 2020

Ferromagnetic materials are the widely used source of spin-polarized electrons in spintronic devices, which are controlled by external magnetic fields or spin-transfer torque methods. However, with increasing demand for smaller and faster spintronic components utilization of spin-orbit phenomena provides promising alternatives. New materials with unique spin textures are highly desirable since all-electric creation and control of spin polarization is expected where the strength, as well as an arbitrary orientation of the polarization, can be defined without the use of a magnetic field. In this work, we use a novel spin-orbit crystal BiTeBr for this purpose. Because of its giant Rashba spin splitting, bulk spin polarization is created at room temperature by an electric current. Integrating BiTeBr crystal into graphene-based spin valve devices, we demonstrate for the first time that it acts as a current-controlled spin injector, opening new avenues for future spintronic applications in integrated circuits.

polar semiconductors

2D materials

all-electric spin control

Spintronics

graphene

Rashba-Edelstein effect

nonlocal spin valve

Författare

Zoltan Kovacs-Krausz

Budapesti Muszaki es Gazdasagtudomanyi Egyetem

Anamul Md Hoque

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Péter Makk

Budapesti Muszaki es Gazdasagtudomanyi Egyetem

Bálint Szentpéteri

Budapesti Muszaki es Gazdasagtudomanyi Egyetem

Mátyás Kocsis

Budapesti Muszaki es Gazdasagtudomanyi Egyetem

Bálint Fülöp

Budapesti Muszaki es Gazdasagtudomanyi Egyetem

Michael Vasilievich Yakushev

Russian Academy of Sciences

Ural Federal University

Tatyana Vladimirovna Kuznetsova

Russian Academy of Sciences

Ural Federal University

Oleg Evgenevich Tereshchenko

Novosibirsk State University

Russian Academy of Sciences

Saint Petersburg State University - Spsu

Konstantin Aleksandrovich Kokh

Novosibirsk State University

Russian Academy of Sciences

Saint Petersburg State University - Spsu

István Endre Lukács

Institute of Technical Physics and Materials Science

Takashi Taniguchi

National Institute for Materials Science (NIMS)

Kenji Watanabe

National Institute for Materials Science (NIMS)

Saroj Prasad Dash

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Szabolcs Csonka

Budapesti Muszaki es Gazdasagtudomanyi Egyetem

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 20 7 4782-4791

Ämneskategorier

Annan fysik

Annan elektroteknik och elektronik

Den kondenserade materiens fysik

DOI

10.1021/acs.nanolett.0c00458

PubMed

32511931

Mer information

Senast uppdaterat

2021-02-04