Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes

A two-dimensional quantum system of dipoles, with a polarization angle not perpendicular to the plane, shows a transition from a gas to a stripe phase. We have studied the thermal properties of these two phases using the path-integral Monte Carlo (PIMC) method. By simulating the thermal density matr...

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Autores: Bombín Escudero, Raul|||0000-0002-4553-1214, Mazzanti Castrillejo, Fernando Pablo|||0000-0001-6641-0609, Boronat Medico, Jordi|||0000-0002-0273-3457
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/176233
Acceso en línea:https://hdl.handle.net/2117/176233
https://dx.doi.org/10.1103/PhysRevA.100.063614
Access Level:acceso abierto
Palabra clave:Superfluidity
BKT transition
Superfluïdesa
Àrees temàtiques de la UPC::Física
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spelling Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripesBombín Escudero, Raul|||0000-0002-4553-1214Mazzanti Castrillejo, Fernando Pablo|||0000-0001-6641-0609Boronat Medico, Jordi|||0000-0002-0273-3457SuperfluidityBKT transitionSuperfluiditySuperfluïdesaÀrees temàtiques de la UPC::FísicaA two-dimensional quantum system of dipoles, with a polarization angle not perpendicular to the plane, shows a transition from a gas to a stripe phase. We have studied the thermal properties of these two phases using the path-integral Monte Carlo (PIMC) method. By simulating the thermal density matrix, PIMC provides exact results for magnitudes of interest such as the superfluid fraction and the one-body density matrix. As it is well known, in two dimensions the superfluid-to-normal phase transition follows the Berezinskii-Kosterlitz-Thouless (BKT) scenario. Our results show that both the anisotropic gas and the stripe phases follow the BKT scaling laws. At fixed density and increasing the tilting angle, the transition temperature decreases in going from the gas to the stripe phase. Superfluidity in the perpendicular direction to the stripes is rather small close to the critical temperature but it becomes larger at lower temperatures, mainly close to the transition to the gas. Our results are in qualitative agreement with the supersolidity observed recently in a quasi-one-dimensional array of dipolar droplets.American Physical Society (APS)20192019-12-0520202020-01-30journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/176233https://dx.doi.org/10.1103/PhysRevA.100.063614reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1762332026-05-27T15:37:01Z
dc.title.none.fl_str_mv Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
title Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
spellingShingle Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
Bombín Escudero, Raul|||0000-0002-4553-1214
Superfluidity
BKT transition
Superfluidity
Superfluïdesa
Àrees temàtiques de la UPC::Física
title_short Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
title_full Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
title_fullStr Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
title_full_unstemmed Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
title_sort Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes
dc.creator.none.fl_str_mv Bombín Escudero, Raul|||0000-0002-4553-1214
Mazzanti Castrillejo, Fernando Pablo|||0000-0001-6641-0609
Boronat Medico, Jordi|||0000-0002-0273-3457
author Bombín Escudero, Raul|||0000-0002-4553-1214
author_facet Bombín Escudero, Raul|||0000-0002-4553-1214
Mazzanti Castrillejo, Fernando Pablo|||0000-0001-6641-0609
Boronat Medico, Jordi|||0000-0002-0273-3457
author_role author
author2 Mazzanti Castrillejo, Fernando Pablo|||0000-0001-6641-0609
Boronat Medico, Jordi|||0000-0002-0273-3457
author2_role author
author
dc.subject.none.fl_str_mv Superfluidity
BKT transition
Superfluidity
Superfluïdesa
Àrees temàtiques de la UPC::Física
topic Superfluidity
BKT transition
Superfluidity
Superfluïdesa
Àrees temàtiques de la UPC::Física
description A two-dimensional quantum system of dipoles, with a polarization angle not perpendicular to the plane, shows a transition from a gas to a stripe phase. We have studied the thermal properties of these two phases using the path-integral Monte Carlo (PIMC) method. By simulating the thermal density matrix, PIMC provides exact results for magnitudes of interest such as the superfluid fraction and the one-body density matrix. As it is well known, in two dimensions the superfluid-to-normal phase transition follows the Berezinskii-Kosterlitz-Thouless (BKT) scenario. Our results show that both the anisotropic gas and the stripe phases follow the BKT scaling laws. At fixed density and increasing the tilting angle, the transition temperature decreases in going from the gas to the stripe phase. Superfluidity in the perpendicular direction to the stripes is rather small close to the critical temperature but it becomes larger at lower temperatures, mainly close to the transition to the gas. Our results are in qualitative agreement with the supersolidity observed recently in a quasi-one-dimensional array of dipolar droplets.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-12-05
2020
2020-01-30
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/176233
https://dx.doi.org/10.1103/PhysRevA.100.063614
url https://hdl.handle.net/2117/176233
https://dx.doi.org/10.1103/PhysRevA.100.063614
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society (APS)
publisher.none.fl_str_mv American Physical Society (APS)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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