Fermi surface shrinking and interband coupling in iron-based pnictides

Details Fermi surface shrinking and interband coupling in iron-based pnictides Fermi surface shrinking and interband coupling in iron-based pnictides

2009-03-02

arxiv.org/abs/0903.0315v2

Phys. Rev. Lett. 103, 046404 (2009)

Physics

Condensed Matter

Superconductivity

4 latex pages, 4 eps figures included, last version as in the accepted form

Scientific paper

Recent measurements of Fermi surface with de Haas-van Alphen oscillations in LaFePO showed a shrinking of the Fermi pockets with respect to first-principle LDA calculations, suggesting an energy shift of the hole and electrons bands with respect to LDA. We show that these shifts are a natural consequence of the strong particle-hole asymmetry of electronic bands in pnictides, and that they provide an indirect experimental evidence of a dominant interband scattering in these systems.

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