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Superconducting Instability in the Periodic Anderson Model

A. N. Tahvildar-Zadeh·M. H. Hettler·M. Jarrell
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Abstract

Employing a quantum Monte Carlo simulation we find a pairing instability in the normal state of the infinite dimensional periodic Anderson model. Superconductivity arises from a normal state in which the screening is protracted and which is clearly not a Fermi liquid. The phase diagram is reentrant reflecting competition between superconductivity and Fermi liquid formation. The estimated superconducting order parameter is even, but has nodes as a function of frequency. This opens the possibility of a temporal node and an effective order parameter composed of charge pairs and spin excitations.

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A. N. Tahvildar-Zadeh, M. H. Hettler, M. Jarrell. 1998-04-15. Superconducting Instability in the Periodic Anderson Model. https://doi.org/10.1080/13642819808206733

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