Unraveling the spin structure of unoccupied states in Bi2Se3

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Dokumenter

DOI

  • Christian Datzer, Univ Munster, University of Munster, Inst Mineral
  • ,
  • Anna Zumbuelte, Univ Munster, University of Munster, Inst Mineral
  • ,
  • Juergen Braun, Munich University
  • ,
  • Tobias Foerster, Univ Munster, University of Munster, Inst Mineral
  • ,
  • Anke B. Schmidt, Univ Munster, University of Munster, Inst Mineral
  • ,
  • Jianli Mi
  • ,
  • Bo Brummerstedt Iversen
  • Philip Hofmann
  • Jan Minar, University of West Bohemia Pilsen
  • ,
  • Hubert Ebert, Munich University
  • ,
  • Peter Krueger, Univ Munster, University of Munster, Inst Mineral
  • ,
  • Michael Rohlfing, Univ Munster, University of Munster, Inst Mineral
  • ,
  • Markus Donath, Univ Munster, University of Munster, Inst Mineral

The optical control of spin currents in topological surface states opens new perspectives in (opto-) spintronics. To understand these processes, a profound knowledge about the dispersion and the spin polarization of both the occupied and the unoccupied electronic states is required. We present a joint experimental and theoretical study on the unoccupied electronic states of the topological insulator Bi2Se3. We discuss spin- and angle-resolved inverse-photoemission results in comparison with calculations for both the intrinsic band structure and, within the one-step model of (inverse) photoemission, the expected spectral intensities. This allows us to unravel the intrinsic spin texture of the unoccupied bands at the surface of Bi2Se3.

OriginalsprogEngelsk
Artikelnummer115401
TidsskriftPhysical Review B
Vol/bind95
Nummer11
Antal sider8
ISSN2469-9950
DOI
StatusUdgivet - 1 mar. 2017

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