2015/12/31 by J. D. Querales-Flores, M. L. Amigó, G. Nieva +1
Materials Science · Physics and Astronomy · #2D Materials and Applications #Electrical resistivity and conductivity #Electronic band structure #Hall conductivity #Hall effect #Iron-based superconductors research #Kubo formula #Magnetoresistance #Superconductivity #Topological Materials and Phenomena #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1209/0295-5075/113/17005
published as EPL 113, 17005 (2016) · 6 pages, 5 figures
openalex publication_date 2016/01/01 · arxiv created 2016/02/29 · arxiv updated 2016/03/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We present β -FeSe magnetotransport data, and describe them theoretically. Using a simplified microscopic model with two correlated effective orbitals, we determined the normal state electrical conductivity and Hall coefficient, using Kubo formalism. With model parameters relevant for Fe-chalcogenides, we describe the observed effect of the structural transition on the ab -plane electrical resistivity, as well as on the magnetoresistance. Temperature-dependent Hall coefficient data were measured at 16 tesla, and their theoretical description improves upon inclusion of moderate electron correlations. We confirm the effect of the structural transition on the electronic structure, finding deformation-induced band splittings comparable to those reported in angle-resolved photoemission.