Pregled bibliografske jedinice broj: 1085844
Electrical Detection of the Spin Polarization Due to Charge Flow in the Surface State of the Topological Insulator Bi1.5Sb0.5Te1.7Se1.3
Electrical Detection of the Spin Polarization Due to Charge Flow in the Surface State of the Topological Insulator Bi1.5Sb0.5Te1.7Se1.3 // Nano Letters, 14 (2014), 11; 6226-6230 doi:10.1021/nl502546c (međunarodna recenzija, članak, ostalo)
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Naslov
Electrical Detection of the Spin Polarization
Due to Charge Flow in the Surface State of the
Topological Insulator Bi1.5Sb0.5Te1.7Se1.3
Autori
Ando, Yuichiro ; Hamasaki, Takahiro ; Kurokawa, Takayuki ; Ichiba, Kouki ; Yang, Fan ; Novak, Mario ; Sasaki, Satoshi ; Segawa, Kouji ; Ando, Yoichi ; Shiraishi, Masashi
Izvornik
Nano Letters (1530-6984) 14
(2014), 11;
6226-6230
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo
Ključne riječi
Spin polarisation
Sažetak
We detected the spin polarization due to charge flow in the spin nondegenerate surface state of a three-dimensional topological insulator by means of an all-electrical method. The charge current in the bulk-insulating topological insulator Bi1.5Sb0.5Te1.7Se1.3 (BSTS) was injected/extracted through a ferromagnetic electrode made of Ni80Fe20, and an unusual current-direction-dependent magnetoresistance gave evidence for the appearance of spin polarization, which leads to a spin-dependent resistance at the BSTS/Ni80Fe20 interface. In contrast, our control experiment on Bi2Se3 gave null result. These observations demonstrate the importance of the Fermi-level control for the electrical detection of the spin polarization in topological insulators.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
