Superfluid current disruption in a chain of weakly coupled Bose-Einstein condensates

Year: 2003

Authors: Cataliotti F.S., Fallani L., Ferlaino F., Fort C., Maddaloni P., Inguscio M.

Autors Affiliation: LENS, Dipartimento di Fisica, Università di Firenze, and INFM via Nello Carrara 1, 50019 Sesto Fiorentino (FI) Italy;
INFM and Dipartimento di Fisica, Università di Catania via A. Sofia 64, 95124 Catania, Italy;
Istituto Nazionale di Ottica Applicata, via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Abstract: We report the experimental observation of the disruption of the superfluid atomic current flowing through an array of weakly linked Bose-Einstein condensates. The condensates are trapped in an optical lattice superimposed on a harmonic magnetic potential. The dynamical response of the system to a change of the magnetic potential minimum along the optical lattice axis goes from a coherent oscillation (superfluid regime) to a localization of the condensates in the harmonic trap (


Volume: 5      Pages from: 71-1  to: 71-7

KeyWords: Phase-transition; Optical lattice; Equation; Dynamics; Arrays; Condensed matter
DOI: 10.1088/1367-2630/5/1/371

Citations: 179
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