Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)- (2×1)

Takuto Nakamura; Yoshiyuki Ohtsubo; Yuki Yamashita; Shin Ichiro Ideta; Kiyohisa Tanaka; Koichiro Yaji; Ayumi Harasawa; Shik Shin; Fumio Komori; Ryu Yukawa; Koji Horiba; Hiroshi Kumigashira; Shin Ichi Kimura

doi:10.1103/PhysRevB.98.075431

Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)- (2×1)

Takuto Nakamura, Yoshiyuki Ohtsubo, Yuki Yamashita, Shin Ichiro Ideta, Kiyohisa Tanaka, Koichiro Yaji, Ayumi Harasawa, Shik Shin, Fumio Komori, Ryu Yukawa, Koji Horiba, Hiroshi Kumigashira, Shin Ichi Kimura

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

7 Citations (Scopus)

Abstract

Electronic states of the Bi/InAs(110)-(2×1) surface and its spin-polarized structure are revealed by angle-resolved photoelectron spectroscopy (ARPES), spin-resolved ARPES, and density-functional-theory calculation. The surface electronic state showed quasi-one-dimensional (Q1D) dispersion curves and a nearly metallic character; the top of the holelike band is just below the Fermi level. The size of the Rashba parameter αR reached a much larger value (∼5.5 eVÅ) than for previously reported 1D systems. The present result will provide a fertile playground for further studies of the exotic electronic phenomena in 1D or Q1D systems with the spin-split electronic states as well as for advanced spintronic devices.

Original language	English
Article number	075431
Journal	Physical Review B
Volume	98
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.98.075431
Publication status	Published - 2018 Aug 27
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)- (2×1). / Nakamura, Takuto; Ohtsubo, Yoshiyuki; Yamashita, Yuki; Ideta, Shin Ichiro; Tanaka, Kiyohisa; Yaji, Koichiro; Harasawa, Ayumi; Shin, Shik; Komori, Fumio; Yukawa, Ryu; Horiba, Koji; Kumigashira, Hiroshi; Kimura, Shin Ichi.

In: Physical Review B, Vol. 98, No. 7, 075431, 27.08.2018.

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

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title = "Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)- (2×1)",

abstract = "Electronic states of the Bi/InAs(110)-(2×1) surface and its spin-polarized structure are revealed by angle-resolved photoelectron spectroscopy (ARPES), spin-resolved ARPES, and density-functional-theory calculation. The surface electronic state showed quasi-one-dimensional (Q1D) dispersion curves and a nearly metallic character; the top of the holelike band is just below the Fermi level. The size of the Rashba parameter αR reached a much larger value (∼5.5 eV{\AA}) than for previously reported 1D systems. The present result will provide a fertile playground for further studies of the exotic electronic phenomena in 1D or Q1D systems with the spin-split electronic states as well as for advanced spintronic devices.",

author = "Takuto Nakamura and Yoshiyuki Ohtsubo and Yuki Yamashita and Ideta, {Shin Ichiro} and Kiyohisa Tanaka and Koichiro Yaji and Ayumi Harasawa and Shik Shin and Fumio Komori and Ryu Yukawa and Koji Horiba and Hiroshi Kumigashira and Kimura, {Shin Ichi}",

note = "Funding Information: We thank J.-C. Rojas-S{\'a}nchez for the helpful discussions. We also thank Y. Takeno for his support during general experiments. The ARPES measurements were partially performed under UVSOR proposal 29-534 and Photon Factory proposal 2017G537. The SARPES experiment in this work was carried out by joint research at ISSP, The University of Tokyo. This work was also supported by JSPS KAKENHI (Grants No. JP26887024 and No. JP17K18757). ",

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AU - Tanaka, Kiyohisa

AU - Yaji, Koichiro

AU - Harasawa, Ayumi

AU - Shin, Shik

AU - Komori, Fumio

AU - Yukawa, Ryu

AU - Horiba, Koji

AU - Kumigashira, Hiroshi

AU - Kimura, Shin Ichi

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PY - 2018/8/27

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AB - Electronic states of the Bi/InAs(110)-(2×1) surface and its spin-polarized structure are revealed by angle-resolved photoelectron spectroscopy (ARPES), spin-resolved ARPES, and density-functional-theory calculation. The surface electronic state showed quasi-one-dimensional (Q1D) dispersion curves and a nearly metallic character; the top of the holelike band is just below the Fermi level. The size of the Rashba parameter αR reached a much larger value (∼5.5 eVÅ) than for previously reported 1D systems. The present result will provide a fertile playground for further studies of the exotic electronic phenomena in 1D or Q1D systems with the spin-split electronic states as well as for advanced spintronic devices.

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