Drift-Induced Enhancement of Cubic Dresselhaus Spin-Orbit Interaction in a Two-Dimensional Electron Gas

Yoji Kunihashi; Haruki Sanada; Yusuke Tanaka; Hideki Gotoh; Koji Onomitsu; Keita Nakagawara; Makoto Kohda; Junsaku Nitta; Tetsuomi Sogawa

doi:10.1103/PhysRevLett.119.187703

Drift-Induced Enhancement of Cubic Dresselhaus Spin-Orbit Interaction in a Two-Dimensional Electron Gas

Yoji Kunihashi, Haruki Sanada, Yusuke Tanaka, Hideki Gotoh, Koji Onomitsu, Keita Nakagawara, Makoto Kohda, Junsaku Nitta, Tetsuomi Sogawa

ENG - Materials Science

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We investigated the effect of an in-plane electric field on drifting spins in a GaAs quantum well. Kerr rotation images of the drifting spins revealed that the spin precession wavelength increases with increasing drift velocity regardless of the transport direction. A model developed for drifting spins with a heated electron distribution suggests that the in-plane electric field enhances the effective magnetic field component originating from the cubic Dresselhaus spin-orbit interaction.

Original language	English
Article number	187703
Journal	Physical review letters
Volume	119
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.119.187703
Publication status	Published - 2017 Oct 31

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.119.187703

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title = "Drift-Induced Enhancement of Cubic Dresselhaus Spin-Orbit Interaction in a Two-Dimensional Electron Gas",

abstract = "We investigated the effect of an in-plane electric field on drifting spins in a GaAs quantum well. Kerr rotation images of the drifting spins revealed that the spin precession wavelength increases with increasing drift velocity regardless of the transport direction. A model developed for drifting spins with a heated electron distribution suggests that the in-plane electric field enhances the effective magnetic field component originating from the cubic Dresselhaus spin-orbit interaction.",

author = "Yoji Kunihashi and Haruki Sanada and Yusuke Tanaka and Hideki Gotoh and Koji Onomitsu and Keita Nakagawara and Makoto Kohda and Junsaku Nitta and Tetsuomi Sogawa",

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AU - Kunihashi, Yoji

AU - Sanada, Haruki

AU - Tanaka, Yusuke

AU - Gotoh, Hideki

AU - Onomitsu, Koji

AU - Nakagawara, Keita

AU - Kohda, Makoto

AU - Nitta, Junsaku

AU - Sogawa, Tetsuomi

N1 - Funding Information: We thank H. Irie and K. Sasaki for useful discussions. This work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grants No. JP15H05699 and No. JP16H03821.

PY - 2017/10/31

Y1 - 2017/10/31

N2 - We investigated the effect of an in-plane electric field on drifting spins in a GaAs quantum well. Kerr rotation images of the drifting spins revealed that the spin precession wavelength increases with increasing drift velocity regardless of the transport direction. A model developed for drifting spins with a heated electron distribution suggests that the in-plane electric field enhances the effective magnetic field component originating from the cubic Dresselhaus spin-orbit interaction.

AB - We investigated the effect of an in-plane electric field on drifting spins in a GaAs quantum well. Kerr rotation images of the drifting spins revealed that the spin precession wavelength increases with increasing drift velocity regardless of the transport direction. A model developed for drifting spins with a heated electron distribution suggests that the in-plane electric field enhances the effective magnetic field component originating from the cubic Dresselhaus spin-orbit interaction.

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Drift-Induced Enhancement of Cubic Dresselhaus Spin-Orbit Interaction in a Two-Dimensional Electron Gas

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