Electronic structure of CuV2S4
Autor(en): | Lu, ZW Klein, BM Kurmaev, EZ Cherkashenko, VM Galakhov, VR Shamin, SN Yarmoshenko, YM Trofimova, VA Uhlenbrock, S Neumann, M Furubayashi, T Hagino, T Nagata, S |
Stichwörter: | CORE; DENSITY; HIGH-TC SUPERCONDUCTORS; Materials Science; Materials Science, Multidisciplinary; NBAL3; Physics; Physics, Applied; Physics, Condensed Matter; STABILITY; SURFACES; THERMAL-PROPERTIES; TRIALUMINIDES; YAL3; ZRAL3 | Erscheinungsdatum: | 1996 | Herausgeber: | AMERICAN PHYSICAL SOC | Journal: | PHYSICAL REVIEW B | Volumen: | 53 | Ausgabe: | 15 | Startseite: | 9626 | Seitenende: | 9633 | Zusammenfassung: | The results of ab initio band-structure calculations and measurements of x-ray-emission valence spectra (XES) (Cu L alpha, V K beta(5), V L alpha, S K beta(1,3), S L(2,3)) and x-ray-photoelectron valence-band and core-level spectra (XPS) of CuV2S4 thiospinel are presented. It is found that a peak in valence-conduction bands close to Fermi level is formed by V 3d states, which provide the metallic properties of CuV2S4. The valence band is formed by Cu 3d, V 3d, V 4p, and S 3p states. Examination of the XES and XPS results and the calculated charge-density maps and densities of states indicates that the valences of both Cu and V are similar to those of their elemental solids. Calculations show a strong electron-phonon coupling in CuV2S4 and the prospect of superconducting behavior has not been confirmed. |
ISSN: | 10980121 | DOI: | 10.1103/PhysRevB.53.9626 |
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geprüft am 15.05.2024