Author/Authors :
Green، نويسنده , , M.A. and Prassides، نويسنده , , K. and Day، نويسنده , , P. Von Neumann-Cosel، نويسنده , , D.A.، نويسنده ,
Abstract :
Neutron weighted density-of-states measurements of Ba1−xKxBiO3 are presented which show pronounced changes as a function of both temperature and Bi oxidation states. Information is gained on both the structural and metal-insulator transitions occurring with increased potassium doping. Phonon anomalies associated with the appearance of a superconducting energy gap gives strong evidence of electron-phonon coupling and superconductivity via a conventional BCS mechanism.
