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|Title:||Electrically Controlled Spin Injection from Giant Rashba Spin-Orbit Conductor BiTeBr|
Hoque, A. M.
Yakushev, M. V.
Kuznetsova, T. V.
Tereshchenko, O. E.
Kokh, K. A.
Lukács, I. E.
Dash, S. P.
|Publisher:||American Chemical Society|
American Chemical Society (ACS)
|Citation:||Electrically Controlled Spin Injection from Giant Rashba Spin-Orbit Conductor BiTeBr / Z. Kovács-Krausz, A. M. Hoque, P. Makk et al. // Nano Letters. — 2020. — Vol. 20. — Iss. 7. — P. 4782-4791.|
|Abstract:||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. Copyright © 2020 American Chemical Society.|
ALL-ELECTRIC SPIN CONTROL
NONLOCAL SPIN VALVE
EXTERNAL MAGNETIC FIELD
RASHBA SPIN SPLITTING
SPIN TRANSFER TORQUE
SPIN ORBIT COUPLING
|metadata.dc.description.sponsorship:||The authors thank D. Khokhiriakov and B. Karpiak for their help in device fabrication and measurements, M. G. Beckerné, F. Fülöp, M. Hajdu for their technical support, and T. Fehér, L. Oroszlány, C. Schönenberger, S. O. Valenzuela, A. Virosztek, and I. Zutic for useful discussions. This work has received funding and support from Topograph, CA16218 by COST, the Flag-ERA iSpinText project, the ÚNKP-19-3-II-BME-303 New National Excellence Program of the Ministry of Human Capacities, from the OTKA FK-123894 and OTKA NN-127900 grants, and RFBR project number 19-29-12061. P.M. acknowledges support from the Bolyai Fellowship, the Marie Curie grant, and the National Research, Development, and Innovation Fund of Hungary within the Quantum Technology National Excellence Program (Project Nr. 2017-1.2.1-NKP-2017-00001). S.P.D. acknowledges funding from Swedish Research Council VR No. 2015-06813 and 2016-03658. M.V.Y. and T.V.K. were supported by the Ministry of Science and Higher Education of the Russian Federation (“Spin” No AAAA-A18-118020290104-2) whereas O.E.T. and K.A.K. were supported by the Russian Science Foundation (No 17-12-01047) and Saint Petersburg State University (Project ID 51126254). K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan and the CREST (JPMJCR15F3), JST.|
|RSCF project card:||17-12-01047|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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