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

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14 Citations (Scopus)


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 languageEnglish
Article number075431
JournalPhysical Review B
Issue number7
Publication statusPublished - 2018 Aug 27


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