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SUMMARY:Quantum oscillations in an iron-based superconductor - Amalia Cold
 ea\, University of Bristol
DTSTART:20081022T101500Z
DTEND:20081022T111500Z
UID:TALK13509@talks.cam.ac.uk
CONTACT:Michael Sutherland
DESCRIPTION:I will present extensive measurements of quantum oscillations 
 in the normal state of the Fe-based superconductor\, LaFePO\, (Tc = 6 K) u
 sing low\ntemperature torque magnetometry and transport\nin high static ma
 gnetic fields measured in Bristol and Tallahassee (up to 45 T). Our result
 s show that the Fermi surface is in broad agreement with the\nband-structu
 re calculations with quasiparticle mass enhanced by a factor of two. The q
 uasi-two dimensional Fermi surface consist of nearly-nested electron and h
 ole pockets\, suggesting proximity to a spin/charge density wave instabili
 ty.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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