New Paths to Unconventional Topological Superconductivity
Event details
| Date | 12.04.2013 |
| Hour | 14:15 |
| Speaker | R. Thomale, Institut of Theoretical Physics - EPFL |
| Location | |
| Category | Conferences - Seminars |
We report on our recent progress regarding classes of materials which exhibit 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 further report on our investigations of Cobaltate superconductors where we believe the experimental evidence can be reconciled by an anisotropic d+id superconducting gap. We also outline our work in progress for other compounds which we believe are promising to stabilize such interesting topological superconducting states of matter.
Practical information
- Informed public
- Free
Organizer
- ICMP (Arnaud Magrez)
Contact
- Arnaud Magrez, Raphaël Butté and Woflgang Harbich