Abrupt rotation of the rashba spin to the direction perpendicular to the surface

Kazuyuki Sakamoto, Tatsuki Oda, Akio Kimura, Koji Miyamoto, Masahito Tsujikawa, Ayako Imai, Nobuo Ueno, Hirofumi Namatame, Masaki Taniguchi, P. E.J. Eriksson, R. I.G. Uhrberg

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

The polarization vector of the Rashba spin, which must be parallel to the two-dimensional (2D) plane in an ideal system, is found to change abruptly and definitely to the direction perpendicular to the surface at the K̄ point of the Brillouin zone of a real hexagonal system, the Tl/Si(111)-(1×1) surface. This finding obtained experimentally by angle-resolved and spin-resolved photoemission measurements is fully confirmed by a first-principles theoretical calculation. We found that the abrupt rotation of the Rashba spin is simply understood by the 2D symmetry of the hexagonal structure.

Original languageEnglish
Article number096805
JournalPhysical Review Letters
Volume102
Issue number9
DOIs
Publication statusPublished - 2009 Mar 2
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Sakamoto, K., Oda, T., Kimura, A., Miyamoto, K., Tsujikawa, M., Imai, A., Ueno, N., Namatame, H., Taniguchi, M., Eriksson, P. E. J., & Uhrberg, R. I. G. (2009). Abrupt rotation of the rashba spin to the direction perpendicular to the surface. Physical Review Letters, 102(9), [096805]. https://doi.org/10.1103/PhysRevLett.102.096805