Mott transition of fermionic mixtures with mass imbalance in optical lattices

Autores
Tung Lam, Dao; Ferrero, Michael; Cornaglia de la Cruz, Pablo Sebastian; Capone, Massimo
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We investigate the effect of mass imbalance in binary Fermi mixtures loaded in optical lattices. Using dynamical mean-field theory, we study the transition from a fluid to a Mott insulator driven by the repulsive interactions. For almost every value of the parameters we find that the light species with smaller bare mass is more affected by correlations than the heavy one, so that their effective masses become closer than their bare masses before a Mott transition occurs. The strength of the critical repulsion decreases monotonically as the mass imbalance grows so that the minimum is realized when one of the species is localized. The evolution of the spectral functions testifies that a continuous loss of coherence and a destruction of the Fermi liquid occur as the imbalance grows. The two species display distinct properties and experimentally observable deviations from the behavior of a balanced Fermi mixture.
Fil: Tung Lam, Dao. Centre National de la Recherche Scientifique; Francia. Universite Paris Sud; Francia
Fil: Ferrero, Michael. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Cornaglia de la Cruz, Pablo Sebastian. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Capone, Massimo. Università Sapienza. Dipartimento di Fisica; Italia. Consiglio Nazionale delle Ricerche. Istituto Officina dei Materiali; Italia. Scuola Internazionale Superiore di Studi Avanzati; Italia
Materia
Cold Atoms
Mott Transition
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11152
Acceder
id CONICETDig_26b35365e8c2908e17067bc7081cddbe
oai_identifier_str oai:ri.conicet.gov.ar:11336/11152
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mott transition of fermionic mixtures with mass imbalance in optical latticesTung Lam, DaoFerrero, MichaelCornaglia de la Cruz, Pablo SebastianCapone, MassimoCold AtomsMott Transitionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We investigate the effect of mass imbalance in binary Fermi mixtures loaded in optical lattices. Using dynamical mean-field theory, we study the transition from a fluid to a Mott insulator driven by the repulsive interactions. For almost every value of the parameters we find that the light species with smaller bare mass is more affected by correlations than the heavy one, so that their effective masses become closer than their bare masses before a Mott transition occurs. The strength of the critical repulsion decreases monotonically as the mass imbalance grows so that the minimum is realized when one of the species is localized. The evolution of the spectral functions testifies that a continuous loss of coherence and a destruction of the Fermi liquid occur as the imbalance grows. The two species display distinct properties and experimentally observable deviations from the behavior of a balanced Fermi mixture.Fil: Tung Lam, Dao. Centre National de la Recherche Scientifique; Francia. Universite Paris Sud; FranciaFil: Ferrero, Michael. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; FranciaFil: Cornaglia de la Cruz, Pablo Sebastian. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); ArgentinaFil: Capone, Massimo. Università Sapienza. Dipartimento di Fisica; Italia. Consiglio Nazionale delle Ricerche. Istituto Officina dei Materiali; Italia. Scuola Internazionale Superiore di Studi Avanzati; ItaliaAmerican Physical Society2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11152Tung Lam, Dao; Ferrero, Michael; Cornaglia de la Cruz, Pablo Sebastian; Capone, Massimo; Mott transition of fermionic mixtures with mass imbalance in optical lattices; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 85; 1; 1-2012; 13606-136061050-2947enginfo:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/pra/abstract/10.1103/PhysRevA.85.013606info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.85.013606info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:42:35Zoai:ri.conicet.gov.ar:11336/11152instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:42:35.696CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mott transition of fermionic mixtures with mass imbalance in optical lattices
title Mott transition of fermionic mixtures with mass imbalance in optical lattices
spellingShingle Mott transition of fermionic mixtures with mass imbalance in optical lattices
Tung Lam, Dao
Cold Atoms
Mott Transition
title_short Mott transition of fermionic mixtures with mass imbalance in optical lattices
title_full Mott transition of fermionic mixtures with mass imbalance in optical lattices
title_fullStr Mott transition of fermionic mixtures with mass imbalance in optical lattices
title_full_unstemmed Mott transition of fermionic mixtures with mass imbalance in optical lattices
title_sort Mott transition of fermionic mixtures with mass imbalance in optical lattices
dc.creator.none.fl_str_mv Tung Lam, Dao
Ferrero, Michael
Cornaglia de la Cruz, Pablo Sebastian
Capone, Massimo
author Tung Lam, Dao
author_facet Tung Lam, Dao
Ferrero, Michael
Cornaglia de la Cruz, Pablo Sebastian
Capone, Massimo
author_role author
author2 Ferrero, Michael
Cornaglia de la Cruz, Pablo Sebastian
Capone, Massimo
author2_role author
author
author
dc.subject.none.fl_str_mv Cold Atoms
Mott Transition
topic Cold Atoms
Mott Transition
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We investigate the effect of mass imbalance in binary Fermi mixtures loaded in optical lattices. Using dynamical mean-field theory, we study the transition from a fluid to a Mott insulator driven by the repulsive interactions. For almost every value of the parameters we find that the light species with smaller bare mass is more affected by correlations than the heavy one, so that their effective masses become closer than their bare masses before a Mott transition occurs. The strength of the critical repulsion decreases monotonically as the mass imbalance grows so that the minimum is realized when one of the species is localized. The evolution of the spectral functions testifies that a continuous loss of coherence and a destruction of the Fermi liquid occur as the imbalance grows. The two species display distinct properties and experimentally observable deviations from the behavior of a balanced Fermi mixture.
Fil: Tung Lam, Dao. Centre National de la Recherche Scientifique; Francia. Universite Paris Sud; Francia
Fil: Ferrero, Michael. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Cornaglia de la Cruz, Pablo Sebastian. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Capone, Massimo. Università Sapienza. Dipartimento di Fisica; Italia. Consiglio Nazionale delle Ricerche. Istituto Officina dei Materiali; Italia. Scuola Internazionale Superiore di Studi Avanzati; Italia
description We investigate the effect of mass imbalance in binary Fermi mixtures loaded in optical lattices. Using dynamical mean-field theory, we study the transition from a fluid to a Mott insulator driven by the repulsive interactions. For almost every value of the parameters we find that the light species with smaller bare mass is more affected by correlations than the heavy one, so that their effective masses become closer than their bare masses before a Mott transition occurs. The strength of the critical repulsion decreases monotonically as the mass imbalance grows so that the minimum is realized when one of the species is localized. The evolution of the spectral functions testifies that a continuous loss of coherence and a destruction of the Fermi liquid occur as the imbalance grows. The two species display distinct properties and experimentally observable deviations from the behavior of a balanced Fermi mixture.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11152
Tung Lam, Dao; Ferrero, Michael; Cornaglia de la Cruz, Pablo Sebastian; Capone, Massimo; Mott transition of fermionic mixtures with mass imbalance in optical lattices; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 85; 1; 1-2012; 13606-13606
1050-2947
url http://hdl.handle.net/11336/11152
identifier_str_mv Tung Lam, Dao; Ferrero, Michael; Cornaglia de la Cruz, Pablo Sebastian; Capone, Massimo; Mott transition of fermionic mixtures with mass imbalance in optical lattices; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 85; 1; 1-2012; 13606-13606
1050-2947
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/pra/abstract/10.1103/PhysRevA.85.013606
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.85.013606
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846082927718301696
score 13.22299

Publicaciones similares