| AVS 64th International Symposium & Exhibition | |
| Magnetic Interfaces and Nanostructures Division | Tuesday Sessions |
| Session MI+2D+AC+NS-TuA |
| Session: | Spin-Orbit Phenomena at Surfaces and Interfaces |
| Presenter: | Markus Donath, Westfälische Wilhelms-Universität Münster, Germany |
| Authors: | M. Donath, Westfälische Wilhelms-Universität Münster, Germany C. Datzer, Westfälische Wilhelms-Universität Münster, Germany A. Zumbülte, Westfälische Wilhelms-Universität Münster, Germany J. Braun, LMU München, Germany T. Förster, Westfälische Wilhelms-Universität Münster, Germany A.B. Schmidt, Westfälische Wilhelms-Universität Münster, Germany J. Mi, Aarhus University, Denmark B. Iversen, Aarhus University, Denmark P. Hofmann, Aarhus University, Denmark J. Minár, University of Pilzen, Czech Republic H. Ebert, LMU München, Germany P. Krüger, Westfälische Wilhelms-Universität Münster, Germany M. Rohlfing, Westfälische Wilhelms-Universität Münster, Germany |
| Correspondent: | Click to Email |
In topological insulators, spin-orbit coupling leads to the emergence of metallic topological surface states crossing the fundamental band gap. 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 [1]. 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.
[1] Datzer et al., Phys. Rev. B 95, 115401 (2017)