Electronic structure of copper pnictides: Influence of different cations and pnictogens

TitleElectronic structure of copper pnictides: Influence of different cations and pnictogens
Publication TypeJournal Article
Year of Publication2013
AuthorsMcLeod JA, Kurmaev EZ, Perez I, Anand VK, Perera PK, Johnston DC, Moewes A
Journal TitlePhysical Review B
Volume88
Pages014508
Date Published07
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000321717300003
Keywordsbeamline, cu2o, cuo, iron, light-source, pressure, ray-emission-spectra, superconductors
Abstract

We present calculated electronic structures and x-ray emission and absorption spectroscopy measurements of five copper pnictides. The x-ray emission and absorption spectra, which probe the occupied and unoccupied states, respectively, provide an empirical justification of the calculated electronic structure. We therefore verify the prediction that the copper 3d states are fully occupied and buried deep in the valence band, and the Fermi surface of these materials is characterized by s, p states. We show that generally the calculated electronic structure is in excellent agreement with our measurements. We finally examine the Fermi surfaces of these pnictides, and suggest that copper antimonides may exhibit efficient Fermi surface nesting similar to iron pnictides.

URL<Go to ISI>://WOS:000321717300003
DOI10.1103/PhysRevB.88.014508