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PIRSA:11110078

New Paths to Unconventional Topological Superconductivity

APA

Thomale, R. (2011). New Paths to Unconventional Topological Superconductivity. Perimeter Institute for Theoretical Physics. https://pirsa.org/11110078

Ronny Thomale Stanford University

Talk numberPIRSA:11110078
Source RepositoryPIRSA
Collection

Abstract

We report on our recent progress to investigate materials classes exhibiting d+id superconductivity, where topologically nontrivial pairing phases can emerge. Specifically, motivated by recent experimental progress, we show that graphene doped to the van Hove regime can give rise to a plethora of interesting ordering instabilities such as spin density wave and superconductivity. As a function of system parameters such as doping and range of Coulomb interaction, we explain which instability is favored by the system, and analyze the effect of long-range interactions on superconductivity giving rise to a competition between singlet d+id and triplet f wave. We also outline our work in progress for other materials classes which we believe are promising to stabilize such interesting topological superconducting states of matter.