Thermodynamic properties of correlated fermions in lattices with spin-dependent disorder

Autor:	Makuch, K., Skolimowski, J., Chakraborty, P. B., Byczuk, K., Vollhardt, D.
Rok vydání:	2013
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Disordered Systems and Neural Networks Condensed Matter - Quantum Gases
Zdroj:	New J. Phys. 15, 045031 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1088/1367-2630/15/4/045031
Popis:	Motivated by the rapidly growing possibilities for experiments with ultracold atoms in optical lattices we investigate the thermodynamic properties of correlated lattice fermions in the presence of an external spin-dependent random potential. The corresponding model, a Hubbard model with spin-dependent local random potentials, is solved within dynamical mean-field theory. This allows us to present a comprehensive picture of the thermodynamic properties of this system. In particular, we show that for a fixed total number of fermions spin-dependent disorder induces a magnetic polarization. The magnetic response of the polarized system differs from that of a system with conventional disorder. Comment: 20 pages, 11 figures, published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1302.3395 Zobrazit plný text záznamu View this record from Arxiv