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arXiv · 0903.0315

Fermi surface shrinking and interband coupling in iron-based pnictides

L. Ortenzi·E. Cappelluti·L. Benfatto·L. Pietronero
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Abstract

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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L. Ortenzi, E. Cappelluti, L. Benfatto, L. Pietronero. 2009-07-24. Fermi surface shrinking and interband coupling in iron-based pnictides. https://arxiv.org/abs/0903.0315

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