Josephson Current Counterflow in Atomic Bose-Einstein Condensates

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dc.creatorSakellari, E.
dc.creatorProukakis, N. P.
dc.creatorLeadbeater, M.
dc.creatorAdams, C. S.
dc.date2003-08-06
dc.date2003-12-17
dc.date.accessioned2026-07-07T02:52:47Z
dc.date.available2026-07-07T02:52:47Z
dc.descriptionJosephson weak links in superconductors can be engineered such that the phase difference across the junction is $π$ ($π$-junction),leading to the reversal of the current. The conditions under which the analogous effect of supercurrent counterflow can be achieved in a double-well atomic Bose-Einstein condensate are investigated. It is shown that this effect is observable for condensates up to a few thousand atoms, which are initially prepared in an anti-symmetric '$π$-state' and subsequently subjected to a uniformly increasing magnetic field gradient. This effect is found to be only weakly-dependent on trap geometry, and can be observed in both attractive and repulsive condensates.
dc.descriptionA substantially revised manuscript (some figures removed, improved discussion and some additional material) is available on cond-mat/0312396
dc.identifierhttps://arxiv.org/abs/cond-mat/0308104
dc.identifierhttp://arxiv.org/abs/cond-mat/0308104
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21970
dc.subjectCondensed Matter
dc.titleJosephson Current Counterflow in Atomic Bose-Einstein Condensates
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