Fermi surface of superconducting LaFePO determined by quantum oscillations

A. I. Coldea; J. D. Fletcher; A. Carrington; J. G. Analytis; A. F. Bangura; J. -H. Chu; A. S. Erickson; I. R. Fisher; N. E. Hussey; R. D. McDonald

doi:10.1103/PhysRevLett.101.216402

Fermi surface of superconducting LaFePO determined by quantum oscillations

Superconductivity 2009-01-15 v2 Strongly Correlated Electrons

Authors: A. I. Coldea , J. D. Fletcher , A. Carrington , J. G. Analytis , A. F. Bangura , J. -H. Chu , A. S. Erickson , I. R. Fisher , N. E. Hussey , R. D. McDonald

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Abstract

We report 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 (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 ~2. The quasi-two dimensional Fermi surface consist of nearly-nested electron and hole pockets, suggesting proximity to a spin/charge density wave instability.

Keywords

fermi surface iron-based superconductor fermi liquid theory

Cite

@article{arxiv.0807.4890,
  title  = {Fermi surface of superconducting LaFePO determined by quantum oscillations},
  author = {A. I. Coldea and J. D. Fletcher and A. Carrington and J. G. Analytis and A. F. Bangura and J. -H. Chu and A. S. Erickson and I. R. Fisher and N. E. Hussey and R. D. McDonald},
  journal= {arXiv preprint arXiv:0807.4890},
  year   = {2009}
}

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to appear in Physical Review Letters

Fermi surface of superconducting LaFePO determined by quantum oscillations

Abstract

Keywords

Cite

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