Glassy behavior in a binary atomic mixture

Bryce Gadway, Daniel Pertot, Jeremy Reeves, Matthias Vogt, Dominik Schneble

Research output: Contribution to journalArticlepeer-review

Abstract

We experimentally study one-dimensional, lattice-modulated Bose gases in the presence of an uncorrelated disorder potential formed by localized impurity atoms, and compare to the case of correlated quasidisorder formed by an incommensurate lattice. While the effects of the two disorder realizations are comparable deeply in the strongly interacting regime, both showing signatures of Bose-glass formation, we find a dramatic difference near the superfluid-to-insulator transition. In this transition region, we observe that random, uncorrelated disorder leads to a shift of the critical lattice depth for the breakdown of transport as opposed to the case of correlated quasidisorder, where no such shift is seen. Our findings, which are consistent with recent predictions for interacting bosons in one dimension, illustrate the important role of correlations in disordered atomic systems.

Original languageEnglish (US)
Article number145306
JournalPhysical review letters
Volume107
Issue number14
DOIs
StatePublished - Sep 30 2011
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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