Observation of inverse spin hall effect in bismuth selenide

By P. Deorani, J. Son, Karan Banerjee, N. Koirala, M. Brahlek, Seongshik Oh, Hyunsoo Yang. 2014

141 citations recorded by the source corpus.

Bismuth Selenide (Bi2Se3) is a topological insulator exhibiting helical spin polarization and strong spin-orbit coupling. The spin-orbit coupling links the charge current to spin current via the spin Hall effect (SHE). We demonstrate a Bi2Se3 spin detector by injecting the pure spin current from a magnetic permalloy layer to a Bi2Se3 thin film and detect the inverse SHE in Bi2Se3. The spin Hall angle of Bi2Se3 is found to be 0.0093 and the spin diffusion length in Bi2Se3 to be 6.2 nm at room temperature. Our results suggest that topological insulators with strong spin-orbit coupling can be used in functional spintronic devices.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/245e62326cc35cf314e159a2b551f9a4bfce7430

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In Atomic and Molecular Physics, and Optics

1. Pietro Gambardella
2. J. Sinova
3. T. Jungwirth
4. A. Manchon
5. I. Miron
6. Kevin Garello
7. A. Thiaville
8. J. Železný

In Materials Chemistry

1. J. Sinova
2. Pietro Gambardella
3. A. Manchon
4. T. Jungwirth
5. T. Dietl

Citations in the corpus

• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems (2018, background): “Spin-charge conversion has been reported by spin pumping for bismuth and antimony chalcogenide layers adjacent to metallic ferromagnets (Deorani et al., 2014; Jamali et al., 2015; Kondou et al., 2015; Mendes et al., 2017; Shiomi et al., 2014) and insulating ferrimagnets (Tang et al.”