BKT phase transition in a 2d system with long range dipole-dipole interaction

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dc.creatorFedichev, P. O.
dc.creatorMen'shikov, L. I.
dc.date2009-04-14
dc.date.accessioned2026-07-07T13:03:47Z
dc.date.available2026-07-07T13:03:47Z
dc.descriptionWe consider phase transitions in 2d XY-like systems with long range dipole-dipole interactions and demonstrate that BKT-type phase transition always occurs separating the ordered (ferroelectric) and the disordered (paraelectric) phases. The low-temperature phase corresponds to a thermal state with bound vortex-antivortex pairs characterized by linear attraction at large distances. We show that bound vortex pairs polarize and screen the vortex-antivortex interaction leaving only the logarithmic attraction at sufficiently large separations between the vortices. At higher temperatures the pairs dissociate and the phase transition similar to BKT occurs, though at a larger temperature than in a system without the dipole-dipole interaction.
dc.description4pages, 2eps figs
dc.identifierhttps://arxiv.org/abs/0904.2176
dc.identifierhttp://arxiv.org/abs/0904.2176
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226927
dc.subjectMesoscale and Nanoscale Physics
dc.titleBKT phase transition in a 2d system with long range dipole-dipole interaction
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