Abstract
The electronic structure of KCu7S4was calculated using the extended Hückel tight binding method, and the origin of the resistivity anomalies and the superlattice reflections ofACu7-xS4(A=Tl, K, Rb) was probed. The present work shows thatACu7-xS4(A=Tl, K, Rb) can be metallic only forx>0 and that the superlattice modulations ofACu7-xS4(A=Tl, K, Rb) are caused by the vacancy ordering in the Cu(2) atom sites. The resistivity anomalies ofACu7-xS4are explained in terms of the vacancy ordering in the Cu(2)-Cu(2) chains.
Original language | English (US) |
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Pages (from-to) | 5-9 |
Number of pages | 5 |
Journal | Journal of Solid State Chemistry |
Volume | 134 |
Issue number | 1 |
DOIs | |
State | Published - Nov 15 1997 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry