Observation of a disordered bosonic insulator from weak to strong interactions

Autor:	D'Errico, Chiara, Lucioni, Eleonora, Tanzi, Luca, Gori, Lorenzo, Roux, Guillaume, McCulloch, Ian P., Giamarchi, Thierry, Inguscio, Massimo, Modugno, Giovanni
Rok vydání:	2014
Předmět:	Condensed Matter - Disordered Systems and Neural Networks Condensed Matter - Quantum Gases
Zdroj:	Phys. Rev. Lett. 113, 095301 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.113.095301
Popis:	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 superfluid-like 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.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1405.1210 Zobrazit plný text záznamu View this record from Arxiv