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  • Wortelen, H., et al. (author)
  • Spin-orbit influence on dz2 -type surface state at Ta(110)
  • 2015
  • In: Physical Review B. Condensed Matter and Materials Physics. - : American Physical Society. - 1098-0121 .- 1550-235X. ; 92:16
  • Journal article (peer-reviewed)abstract
    • The influence of spin-orbit interaction on an occupied surface state at Ta(110) is investigated with spin- and angle-resolved photoemission and electronic structure calculations. The surface state appears in a symmetry gap at a binding energy of 0.45 eV at Γ¯ and exhibits a free-electron-like E(k) dispersion with an effective mass m∗/me of about -1.35 along Γ¯H¯. Photoemission results for excitation with s- and p-polarized light confirm the predicted dz2-type symmetry of the state close to Γ¯. Spin-resolved data for finite k reveal a pure Rashba-type spin texture with a Rashba parameter of 0.063±0.007eVÅ. These findings clearly prove a sizable impact of spin-orbit coupling on the dz2 surface state and resolve a longstanding disagreement on this issue.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Okuda, T. (1)
Kimura, A. (1)
Thonig, Danny, 1986- (1)
Henk, J. (1)
Wortelen, H. (1)
Mirhosseini, H. (1)
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Donath, M. (1)
Miyamoto, K (1)
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University
Uppsala University (1)
Örebro University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2015 (1)

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