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Nonvortical Rashba Spin Structure on a Surface with C1h Symmetry

Annese, Emilia; Kuzumaki, Takuya; Müller, Beate; Yamamoto, Yuta; Nakano, Hiroto; Kato, Haruki; Araki, Atsushi; Ohtaka, Minoru; Aoki, Takashi and Ishikawa, Hirotaka, et al. (2016) In Physical Review Letters 117(1).
Abstract

A totally anisotropic peculiar Rashba-Bychkov (RB) splitting of electronic bands was found on the Tl/Si(110)-(1×1) surface with C1h symmetry by angle- and spin-resolved photoelectron spectroscopy and first-principles theoretical calculation. The constant energy contour of the upper branch of the RB split band has a warped elliptical shape centered at a k point located between Γ and the edge of the surface Brillouin zone, i.e., at a point without time-reversal symmetry. The spin-polarization vector of this state is in-plane and points almost the same direction along the whole elliptic contour. This novel nonvortical RB spin structure is confirmed as a general phenomenon originating from the C1h symmetry of the surface.

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Physical Review Letters
volume
117
issue
1
publisher
American Physical Society
external identifiers
  • scopus:84977636021
  • wos:000378881300010
ISSN
0031-9007
DOI
10.1103/PhysRevLett.117.016803
language
English
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yes
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0de749d4-9678-4ba8-a13e-12daf1faae2e
date added to LUP
2017-01-19 09:56:02
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2017-10-22 05:25:10
@article{0de749d4-9678-4ba8-a13e-12daf1faae2e,
  abstract     = {<p>A totally anisotropic peculiar Rashba-Bychkov (RB) splitting of electronic bands was found on the Tl/Si(110)-(1×1) surface with C1h symmetry by angle- and spin-resolved photoelectron spectroscopy and first-principles theoretical calculation. The constant energy contour of the upper branch of the RB split band has a warped elliptical shape centered at a k point located between Γ and the edge of the surface Brillouin zone, i.e., at a point without time-reversal symmetry. The spin-polarization vector of this state is in-plane and points almost the same direction along the whole elliptic contour. This novel nonvortical RB spin structure is confirmed as a general phenomenon originating from the C1h symmetry of the surface.</p>},
  articleno    = {016803},
  author       = {Annese, Emilia and Kuzumaki, Takuya and Müller, Beate and Yamamoto, Yuta and Nakano, Hiroto and Kato, Haruki and Araki, Atsushi and Ohtaka, Minoru and Aoki, Takashi and Ishikawa, Hirotaka and Hayashida, Takashi and Osiecki, Jacek R. and Miyamoto, Koji and Takeichi, Yasuo and Harasawa, Ayumi and Yaji, Koichiro and Shirasawa, Tetsuroh and Nittoh, Koh Ichi and Yang, Wooil and Miki, Kazushi and Oda, Tatsuki and Yeom, Han Woong and Sakamoto, Kazuyuki},
  issn         = {0031-9007},
  language     = {eng},
  month        = {06},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Nonvortical Rashba Spin Structure on a Surface with C1h Symmetry},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.117.016803},
  volume       = {117},
  year         = {2016},
}