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Mass and lifetime enhancement due to disorder in Ag/sub c/Pd/sub 1-c/ alloys

Journal Article · · Phys. Rev. Lett.; (United States)

Residual resistivities of Ag/sub c/Pd/sub 1-c/ alloys for 0.2< or =c< or = 0.8 were calculated from first principles using the Korringa-Kohn-Rostoker coherent-potential approximation and yielding quantitative agreement with experiment with no adjustable parameters. Some aspects of Mott's sd model are confirmed, but the s sheet velocities and lifetimes vary in a surprising manner with concentration because of the energy dependence of the disorder self-energy at the top of the d-band complex. These variations are analogous to electron-phonon mass and lifetime renormalization.

Research Organization:
Oak Ridge National Lab., TN
OSTI ID:
5592382
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 48:1; ISSN PRLTA
Country of Publication:
United States
Language:
English