Observation of a disordered bosonic insulator from weak to strong interactions.
Identifieur interne : 003550 ( PubMed/Corpus ); précédent : 003549; suivant : 003551Observation of a disordered bosonic insulator from weak to strong interactions.
Auteurs : Chiara D'Errico ; Eleonora Lucioni ; Luca Tanzi ; Lorenzo Gori ; Guillaume Roux ; Ian P. Mcculloch ; Thierry Giamarchi ; Massimo Inguscio ; Giovanni ModugnoSource :
- Physical review letters [ 1079-7114 ] ; 2014.
Abstract
We employ ultracold atoms with controllable disorder and interaction to study the paradigmatic problem of disordered bosons in the full disorder-interaction plane. Combining measurements of coherence, transport and excitation spectra, we get evidence of an insulating regime extending from weak to strong interaction and surrounding a superfluidlike regime, in general agreement with the theory. For strong interaction, we reveal the presence of a strongly correlated Bose glass coexisting with a Mott insulator.
DOI: 10.1103/PhysRevLett.113.095301
PubMed: 25215990
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pubmed:25215990Le document en format XML
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<front><div type="abstract" xml:lang="en">We employ ultracold atoms with controllable disorder and interaction to study the paradigmatic problem of disordered bosons in the full disorder-interaction plane. Combining measurements of coherence, transport and excitation spectra, we get evidence of an insulating regime extending from weak to strong interaction and surrounding a superfluidlike regime, in general agreement with the theory. For strong interaction, we reveal the presence of a strongly correlated Bose glass coexisting with a Mott insulator.</div>
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<Abstract><AbstractText>We employ ultracold atoms with controllable disorder and interaction to study the paradigmatic problem of disordered bosons in the full disorder-interaction plane. Combining measurements of coherence, transport and excitation spectra, we get evidence of an insulating regime extending from weak to strong interaction and surrounding a superfluidlike regime, in general agreement with the theory. For strong interaction, we reveal the presence of a strongly correlated Bose glass coexisting with a Mott insulator.</AbstractText>
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