Electronic Structure of Novel Superconductor AuSb₆Te

Abstract

We have investigated the electronic structure of the newly found superconductor AuSb 6 Te from first principles. The density of states curve has a sharp peak just around the Fermi level. The obtained number of the Au-5d electrons is ~8.0, which, similar to the high-pressure phase of the mixed-valence compound CsAuCl 3 . This means that Au almost takes 2+ valence in average.