期刊
NANO LETTERS
卷 20, 期 7, 页码 4782-4791出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c00458
关键词
Spintronics; nonlocal spin valve; all-electric spin control; polar semiconductors; Rashba-Edelstein effect; 2D materials; graphene
类别
资金
- COST [CA16218]
- Flag-ERA iSpinText project
- Ministry of Human Capacities [U'NKP-19-3-II-BME-303]
- OTKA [FK-123894, NN127900]
- RFBR [19-29-12061]
- Bolyai Fellowship
- Marie Curie grant
- National Research, Development, and Innovation Fund of Hungary within the Quantum Technology National Excellence Program [2017-1.2.1-NKP2017-00001]
- Swedish Research Council VR [2015-06813, 2016-03658]
- Ministry of Science and Higher Education of the Russian Federation [AAAA-A18-118020290104-2]
- Russian Science Foundation [17-1201047]
- Saint Petersburg State University [51126254]
- Elemental Strategy Initiative conducted by the MEXT, Japan
- CREST, JST [JPMJCR15F3]
- Swedish Research Council [2016-03658, 2015-06813] Funding Source: Swedish Research Council
- Russian Science Foundation [20-12-18024] Funding Source: Russian Science Foundation
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.
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