Anomalous electronic correlations in the ground state momentum density of Al(97)Li(3)

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-princip...

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Bibliographic Details
Published in:Physical review letters 2006-05, Vol.96 (18), p.186403-186403
Main Authors: Kwiatkowska, J, Barbiellini, B, Kaprzyk, S, Bansil, A, Kawata, H, Shiotani, N
Format: Article
Language:English
Subjects:
ALUMINIUM ALLOYS
APPROXIMATIONS
BINARY ALLOY SYSTEMS
COMPTON EFFECT
FERMI GAS
GROUND STATES
LITHIUM ALLOYS
MATERIALS SCIENCE
MOMENTUM TRANSFER
MONOCRYSTALS
POTENTIALS
RESOLUTION
SYMMETRY
WAVE FUNCTIONS
X-RAY DIFFRACTION
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.96.186403