"Exhaustion" physics in the periodic anderson model using iterated perturbation theory

Vidhyadhiraja, N. S. ; Tahvildar-Zadeh, A. N. ; Jarrell, Mark ; Krishnamurthy, H. R. (2000) "Exhaustion" physics in the periodic anderson model using iterated perturbation theory Europhysics Letters, 49 (4). pp. 459-465. ISSN 0295-5075

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Official URL: http://iopscience.iop.org/0295-5075/49/4/459/

Related URL: http://dx.doi.org/10.1209/epl/i2000-00171-0

Abstract

We discuss the "exhaustion" problem in the context of the Periodic Anderson Model using Iterated Perturbation Theory(IPT) within the Dynamical Mean Field Theory. We find that, despite its limitations, IPT captures the exhaustion physics, which manifests itself as a dramatic, strongly energy dependent suppression of the effective Anderson impurity problem. As a consequence, low energy scales in the lattice case are strongly suppressed compared to the "Kondo scale" in the single-impurity picture. The IPT results are in qualitative agreement with recent Quantum Monte Carlo results for the same problem.

Item Type:Article
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ID Code:17563
Deposited On:16 Nov 2010 09:32
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