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American Physical Society, Physical Review Letters, 5(95), 2005

DOI: 10.1103/physrevlett.95.056401

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Interaction-Induced Adiabatic Cooling and Antiferromagnetism of Cold Fermions in Optical Lattices

Journal article published in 2005 by F. Werner, O. Parcollet ORCID, A. Georges ORCID, S. R. Hassan
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This paper is available in a repository.

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Abstract

We propose an interaction-induced cooling mechanism for two-component cold fermions in an optical lattice. It is based on an increase of the spin entropy upon localization, an analogue of the Pomeranchuk effect in liquid helium 3. We discuss its application to the experimental realization of the antiferromagnetic phase. We illustrate our arguments with dynamical mean-field theory calculations.