Electronic properties of single-phased metastable Ag-Cu alloys

We report on results of the measurement of the linear specific-heat coefficient, the magnetic susceptibility, the ${}_{}{}^{63}{}_{}{}^{}\mathrm{Cu}$ NMR Knight shift, and the ${}_{}{}^{63}{}_{}{}^{}\mathrm{Cu}$ NMR spin-lattice relaxation time of single-phased metastable Ag-Cu alloys prepared by means of rapid quenching techniques. Difficulties in preparing the metastable alloys are discussed in some detail. Self-consistent Korringa-Kohn-Rostoker coherent-potential-approximation calculations were performed to allow for a detailed and parameter-free discussion of the experimental data and their relationship to the electronic structure of the alloys.