FWI Seminar: Impurity effects in interaction driven topological insulators
- Date
- Feb 5, 2019
- Time
- 11:00 AM - 12:00 PM
- Speaker
- Dr. Dmitri Efremov
- Affiliation
- IFW, Dresden
- Language
- en
- Main Topic
- Physik
- Other Topics
- Physik
- Host
- Dr. Arkady Krasheninnikov
- Description
- 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).
Last modified: Feb 5, 2019, 1:05:41 AM
Location
Helmholtz-Zentrum Dresden-Rossendorf (712/138 - Versammlungsraum)Bautzner Landstraße40001328Dresden
- HZDR
- Homepage
- http://www.hzdr.de
Organizer
Helmholtz-Zentrum Dresden-RossendorfBautzner Landstraße40001328Dresden
- HZDR
- Homepage
- http://www.hzdr.de
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