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Title

Observation of a Disordered Bosonic Insulator from Weak to Strong Interactions

Authors
D’Errico, Chiara
Lucioni, Eleonora
Tanzi, Luca
Gori, Lorenzo
Roux, Guillaume
McCulloch, Ian P.
Inguscio, Massimo
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Published in Physical Review Letters. 2014, vol. 113, no. 9, p. 095301
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.
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Research group Groupe Giamarchi
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D’ERRICO, Chiara et al. Observation of a Disordered Bosonic Insulator from Weak to Strong Interactions. In: Physical Review Letters, 2014, vol. 113, n° 9, p. 095301. https://archive-ouverte.unige.ch/unige:87811

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Deposited on : 2016-09-27

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