FWI Seminar: Impurity effects in interaction driven topological insulators
- Datum
- 05.02.2019
- Zeit
- 11:00 - 12:00
- Sprecher
- Dr. Dmitri Efremov
- Zugehörigkeit
- IFW, Dresden
- Sprache
- en
- Hauptthema
- Physik
- Andere Themen
- Physik
- Host
- Dr. Arkady Krasheninnikov
- Beschreibung
- Interaction-driven topological phases significantly enrich the class of topological materials. In this talk I discuss the effect of disorder on the weak-coupling instabilities of the quadratic band crossing point (QBCP) in two-dimensional Fermi systems, which, in the clean limit, display interaction-driven topological insulating phases. After considering possible instabilities and corresponding ordered phases I will show that the disorder generally suppresses the critical temperature at which the interaction-driven topologically non-trivial order sets in. Moreover, strong disorder can also cause a topological phase transition into a topologically trivial insulating state. Based on Physical Review B 96 (20), 201104 (2017).
Letztmalig verändert: 05.02.2019, 01:05:41
Veranstaltungsort
Helmholtz-Zentrum Dresden-Rossendorf (712/138 - Versammlungsraum)Bautzner Landstraße40001328Dresden
- HZDR
- Homepage
- http://www.hzdr.de
Veranstalter
Helmholtz-Zentrum Dresden-RossendorfBautzner Landstraße40001328Dresden
- HZDR
- Homepage
- http://www.hzdr.de
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