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.
Fermi-surface shrinking and interband coupling in iron-based pnictides / Ortenzi, L.; Cappelluti, E.; Benfatto, L.; Pietronero, Luciano. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 103 (4):(2009), pp. 046404-1-046404-4. [10.1103/PhysRevLett.103.046404]
Fermi-surface shrinking and interband coupling in iron-based pnictides
L. BENFATTO;PIETRONERO, Luciano
2009
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
