Electronic Band Structure Study of the Anomalous Electrical and Superconducting Properties of Hexagonal Alkali Tungsten Bronzes A_xWO_3 (A = K, Rb, Cs)

摘要

The electrical and superconducting properties of hexagonal alkali tungsten bronzes A_xWO_3 (A = K, Rb, Cs)were examined by calculating the electronic band structure of a representative hexagonal tungsten bronze and analyzing reported crystal structures of A_xWO_3 (A = K, Rb, Cs). These bronzes possess one-dimensional (1D) and three-dimensional Fermi surfaces.