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Dr Pavel Ostrovsky, Karlsruhe
Thursday 04 February 2010, 14:15-15:45
Interaction-induced criticality in topological insulators
- đ¤ Speaker: Dr Pavel Ostrovsky, Karlsruhe
- đ Date & Time: Thursday 04 February 2010, 14:15 - 15:45
- đ Venue: TCM Seminar Room, Cavendish Laboratory
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Joe Bhaseen
Abstract
We study interaction effects in topological insulators with strong spin-orbit coupling. We find that the interplay of nontrivial topology and the Coulomb repulsion induces a novel critical state on the surface of a three dimensional topological insulator. Remarkably, this interaction-induced critical state, characterized by a universal value of electrical conductivity, emerges without any adjustable parameters. Furthermore, we predict a direct quantum-spin-Hall transition in two dimensions that occurs via a similar critical state.
Series This talk is part of the TCM Blackboard Series series.
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