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.

nonlocal spin valve

polar semiconductors


Rashba-Edelstein effect

all-electric spin control


2D materials


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Nano Letters

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

Vol. 20 7 4782-4791


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