Localization effects in disordered Kondo lattices

Details Localization effects in disordered Kondo lattices Localization effects in disordered Kondo lattices

1998-08-11

arxiv.org/abs/cond-mat/9808116v1

Physica B 259-261, 359 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, 3 figures, Proceedings of SCES98/Paris

Scientific paper

10.1016/S0921-4526(98)00993-4

We investigate the role of localization effects in the Kondo disorder mechanism for non-Fermi liquid behavior in disordered Kondo lattices. We find that the distribution of Kondo temperatures is strongly affected by fluctuations of the conduction electron density of states, a feature neglected in the previous treatment. For moderate disorder, the self-consistent distribution of Kondo temperatures flows to a universal log-normal form, irrespective of the form of the bare disorder distribution. For sufficient disorder, the system enters a Griffiths phase with diverging thermodynamic responses.

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