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

Recent measurements of the Fermi surface with de Haas-van Alphen oscillations in LaFePO showed a shrinking of the Fermi pockets with respect to first-principle calculations, suggesting an energy shift of the hole and electrons bands with respect to local-density approximations. We show that this shi...

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Bibliographic Details
Published inPhysical review letters Vol. 103; no. 4; p. 046404
Main Authors Ortenzi, L, Cappelluti, E, Benfatto, L, Pietronero, L
Format Journal Article
LanguageEnglish
Published United States 24.07.2009
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Summary:Recent measurements of the Fermi surface with de Haas-van Alphen oscillations in LaFePO showed a shrinking of the Fermi pockets with respect to first-principle calculations, suggesting an energy shift of the hole and electrons bands with respect to local-density approximations. We show that this shift is a natural consequence of the strong particle-hole asymmetry of electronic bands in pnictides, and that it provides an indirect experimental evidence of a dominant interband scattering in these systems.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.103.046404