Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 51: Topological Insulators (joint session DS, HL, MA, O, TT, organized by MA)

TT 51.5: Vortrag

Mittwoch, 22. März 2017, 16:00–16:15, HSZ 401

Theoretical investigations of magnetically doped topological insulators — •Jan Minar^1,2, Jürgen Braun¹, Hubert Ebert¹, Jaime Sanchez-Barriga³, Oliver Rader³, Jan Honolka⁴, and Andreas Ney⁵ — ¹LMU München, Germany — ²University of West Bohemia, Plzen, Czech Rep. — ³Helmholz Zentrum, Berlin — ⁴ASCR, Institute of Physics, Prague — ⁵Johannes Kepler University Linz, Austria

Band gap opening of topological surface states due to magnetic doping is the subject of a long standing and ongoing discussion. However, in spite of the progress made during the last years in this field there are still phenomena that are poorly understood and many open issues to be addressed. In several cases, like for example Mn doped Bi₂Se₃ band gap opening does not seem to be of magnetic origin. We will present several examples for detailed theoretical studies on various bulk as well as surface doped topological insulators performed by means of the SPR-KKR band structure method. Our results will be discussed in direct comparison with corresponding ARPES [1], XAS and XMCD [2,3] experimental data.

[1] J. Sanchez-Barriga et al., Nat. Communications, 7, 10559 (2016)

[2] A. Ney et al., in preparation

[3] J. Honolka et al., PhysRevB 94, 161114 (2016)