Observation of a disordered bosonic insulator from weak to strong interactions

D'Errico, Chiara, Lucioni, Eleonora, Tanzi, Luca, Gori, Lorenzo, Roux, Guillaume, McCulloch, Ian P., Giamarchi, Thierry, Inguscio, Massimo and Modugno, Giovanni (2014) Observation of a disordered bosonic insulator from weak to strong interactions. Physical Review Letters, 113 9: 095301. doi:10.1103/PhysRevLett.113.095301

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Author D'Errico, Chiara
Lucioni, Eleonora
Tanzi, Luca
Gori, Lorenzo
Roux, Guillaume
McCulloch, Ian P.
Giamarchi, Thierry
Inguscio, Massimo
Modugno, Giovanni
Title Observation of a disordered bosonic insulator from weak to strong interactions
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
1079-7114
Publication date 2014-08-29
Year available 2014
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.113.095301
Open Access Status File (Publisher version)
Volume 113
Issue 9
Start page 095301
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
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.
Keyword Bose-Einstein condensate
Anderson localization
Phase transition
Optical lattice
Gases
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 203479
PRIN2009FBKLN
CE110001013
ANR-2011-BS04-012-01 QuDec
Institutional Status UQ
Additional Notes Article ID: 095301

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2015 Collection
 
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