Anomalous electronic correlations in ground state momentum density of Al$_{97}$Li$_3$

Details Anomalous electronic correlations in ground state momentum density of Al$_{97}$Li$_3$ Anomalous electronic correlations in ground state momentum density of Al$_{97}$Li$_3$

2006-01-24

arxiv.org/abs/cond-mat/0601530v1

Phys. Rev. Lett. 96, 186403 (2006)

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.96.186403

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 KKR-CPA (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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