Anomalous electronic correlations in the ground state momentum density of Al(97)Li(3) |
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Authors: | Kwiatkowska J Barbiellini B Kaprzyk S Bansil A Kawata H Shiotani N |
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Institution: | H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland. |
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Abstract: | We report high resolution Compton scattering measurements on an Al(97)Li(3) disordered alloy single crystal for momentum transfer along the 100], 110], and 111] symmetry directions. The results are interpreted via corresponding Korringa-Kohn-Rostoker coherent potential approximation first-principles computations. By comparing spectra for Al(97)Li(3) and Al, we show that the momentum density in the alloy differs significantly from the predictions of the conventional Fermi-liquid picture and that the ground state of Al is modified anomalously by the addition of Li. |
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