Low-Temperature Coherence in the Periodic Anderson Model: Predictions for Photoemission of Heavy Fermions
- 8 June 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (23) , 5168-5171
- https://doi.org/10.1103/physrevlett.80.5168
Abstract
We present numerically exact predictions of the periodic and single impurity Anderson models to address photoemission experiments on heavy fermion systems. Unlike the single impurity model the lattice model is able to account for the enhanced intensity, dispersion, and apparent weak temperature dependence of the Kondo resonant peak seen in recent controversial photoemission experiments. We present a consistent interpretation of these results as a crossover from the impurity regime to an effective Hubbard model regime described by Nozières.Keywords
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