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Title: Spin-polarized semiconductor surface states localized in subsurface layers
Authors: Ohtsubo, Yoshiyuki
Hatta, Shinichiro  KAKEN_id  orcid (unconfirmed)
Yaji, Koichiro
Okuyama, Hiroshi  kyouindb  KAKEN_id  orcid (unconfirmed)
Miyamoto, Koji
Okuda, Taichi
Kimura, Akio
Namatame, Hirofumi
Taniguchi, Masaki
Aruga, Tetsuya  KAKEN_id  orcid (unconfirmed)
Author's alias: 有賀, 哲也
Issue Date: Nov-2010
Publisher: The American Physical Society
Journal title: Physical Review B
Volume: 82
Issue: 20
Thesis number: 201307(R)
Abstract: A pair of different surface-state and surface-resonance bands has been identified on Bi/Ge(111)-(√3×√3)R30° by a combined experimental and computational study. The wave functions of the states have negligible amplitude at Bi atoms and are extended over more than 20 subsurface layers. These bands exhibit characteristic spin structure, which is ascribed to the combined Rashba and atomic spin-orbit interaction (SOI). Unlike previously known surface Rashba systems, the spin polarization is induced by SOI of a light element (Ge) with negligible contribution of a heavier one (Bi).
Rights: © 2010 The American Physical Society
DOI(Published Version): 10.1103/PhysRevB.82.201307
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