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Localization of Correlated Fermions in Optical Lattices with Speckle Disorder by Semmler, D.; Wernsdorfer, J.; Bissbort, U.; Byczuk, K.; Hofstetter, W. is a scholarly article available to read on EtoBox.

What is Localization of Correlated Fermions in Optical Lattices with Speckle Disorder about?

Strongly correlated fermions in three- and two-dimensional optical lattices with experimentally realistic speckle disorder are investigated. We extend and apply the statistical dynamical mean-field theory, which treats local correlations non-perturbatively, to incorporate on-site and hopping-type randomness on equal footing. Localization due to disorder is detected via the probability distribution function of the local density of states. We obtain a complete paramagnetic ground state phase diagram for experimentally realistic parameters and find a strong suppression of the correlation-induced metal insulator transition due to disorder. Our results indicate that the Anderson-Mott and the Mott insulator are not continuously connected due to the specific character of speckle disorder. Furthermore, we discuss the effect of finite temperature on the single-particle spectral function.

Author

Semmler, D.; Wernsdorfer, J.; Bissbort, U.; Byczuk, K.; Hofstetter, W.

Published

2010

Language

EN