Fermi surface of superconducting LaFePO determined from quantum oscillations

We report extensive measurements of quantum oscillations in the normal state of the Fe-based superconductor LaFePO, (T(c) approximately 6 K) using low temperature torque magnetometry and transport in high static magnetic fields (45 T). We find that the Fermi surface is in broad agreement with the ba...

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Bibliographic Details
Published in:Physical review letters 2008-11, Vol.101 (21), p.216402-216402, Article 216402
Main Authors: Coldea, A I, Fletcher, J D, Carrington, A, Analytis, J G, Bangura, A F, Chu, J-H, Erickson, A S, Fisher, I R, Hussey, N E, McDonald, R D
Format: Article
Language:English
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Summary:We report extensive measurements of quantum oscillations in the normal state of the Fe-based superconductor LaFePO, (T(c) approximately 6 K) using low temperature torque magnetometry and transport in high static magnetic fields (45 T). We find that the Fermi surface is in broad agreement with the band-structure calculations with the quasiparticle mass enhanced by a factor approximately 2. The quasi-two-dimensional Fermi surface consists of nearly nested electron and hole pockets, suggesting proximity to a spin or charge density wave instability.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.101.216402