Quantum oscillations in an iron-based superconductor
- đ¤ Speaker: Amalia Coldea, University of Bristol
- đ Date & Time: Wednesday 22 October 2008, 11:15 - 12:15
- đ Venue: Mott Seminar Room, Cavendish Laboratory, Department of Physics
Abstract
I will present extensive measurements of quantum oscillations in the normal state of the Fe-based superconductor, LaFePO, (Tc = 6 K) using low temperature torque magnetometry and transport in high static magnetic fields measured in Bristol and Tallahassee (up to 45 T). Our results show that the Fermi surface is in broad agreement with the band-structure calculations with quasiparticle mass enhanced by a factor of two. The quasi-two dimensional Fermi surface consist of nearly-nested electron and hole pockets, suggesting proximity to a spin/charge density wave instability.
Series This talk is part of the Quantum Matter Seminar series.
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Amalia Coldea, University of Bristol
Wednesday 22 October 2008, 11:15-12:15