Enhanced pairing of quantum critical metals near d=3+1

Autores
Fitzpatrick, A. Liam; Kachru, Shamit; Kaplan, Jared; Raghu, S.; Torroba, Gonzalo; Wang, Huajia
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the dynamics of a quantum critical boson coupled to a Fermi surface in intermediate energy regimes where the Landau damping of the boson can be parametrically controlled, either via large Fermi velocity or by large-N techniques. We develop a systematic approach to the BCS instability of such systems, including careful treatment of the enhanced log2 and log3 singularities which appear already at 1-loop. These singularities arise due to the exchange of a critical boson in the Cooper channel and are absent in Fermi liquid theory. We also treat possible instabilities to charge density wave (CDW) formation, and compare the scales BCS and CDW of the onset of the instabilities in different parametric regimes. We address the question of whether the dressing of the fermions into a non-Fermi liquid via interactions with the order parameter field can happen at energies >BCS,CDW.
Fil: Fitzpatrick, A. Liam. University of Stanford; Estados Unidos
Fil: Kachru, Shamit. University of Stanford; Estados Unidos
Fil: Kaplan, Jared. University Johns Hopkins; Estados Unidos
Fil: Raghu, S.. University of Stanford; Estados Unidos
Fil: Torroba, Gonzalo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Wang, Huajia. University of Stanford; Estados Unidos
Materia
Superconductivity
Quantum Metals
Non-Fermi Liquid
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:11336/54195

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network_name_str CONICET Digital (CONICET)
spelling Enhanced pairing of quantum critical metals near d=3+1Fitzpatrick, A. LiamKachru, ShamitKaplan, JaredRaghu, S.Torroba, GonzaloWang, HuajiaSuperconductivityQuantum MetalsNon-Fermi Liquidhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the dynamics of a quantum critical boson coupled to a Fermi surface in intermediate energy regimes where the Landau damping of the boson can be parametrically controlled, either via large Fermi velocity or by large-N techniques. We develop a systematic approach to the BCS instability of such systems, including careful treatment of the enhanced log2 and log3 singularities which appear already at 1-loop. These singularities arise due to the exchange of a critical boson in the Cooper channel and are absent in Fermi liquid theory. We also treat possible instabilities to charge density wave (CDW) formation, and compare the scales BCS and CDW of the onset of the instabilities in different parametric regimes. We address the question of whether the dressing of the fermions into a non-Fermi liquid via interactions with the order parameter field can happen at energies >BCS,CDW.Fil: Fitzpatrick, A. Liam. University of Stanford; Estados UnidosFil: Kachru, Shamit. University of Stanford; Estados UnidosFil: Kaplan, Jared. University Johns Hopkins; Estados UnidosFil: Raghu, S.. University of Stanford; Estados UnidosFil: Torroba, Gonzalo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Wang, Huajia. University of Stanford; Estados UnidosAmerican Physical Society2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54195Fitzpatrick, A. Liam; Kachru, Shamit; Kaplan, Jared; Raghu, S.; Torroba, Gonzalo; et al.; Enhanced pairing of quantum critical metals near d=3+1; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 92; 4; 7-2015; 1-14; 0451181098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.92.045118info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.045118info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:29:22Zoai:ri.conicet.gov.ar:11336/54195instacron: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 15:29:22.364CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Enhanced pairing of quantum critical metals near d=3+1
title Enhanced pairing of quantum critical metals near d=3+1
spellingShingle Enhanced pairing of quantum critical metals near d=3+1
Fitzpatrick, A. Liam
Superconductivity
Quantum Metals
Non-Fermi Liquid
title_short Enhanced pairing of quantum critical metals near d=3+1
title_full Enhanced pairing of quantum critical metals near d=3+1
title_fullStr Enhanced pairing of quantum critical metals near d=3+1
title_full_unstemmed Enhanced pairing of quantum critical metals near d=3+1
title_sort Enhanced pairing of quantum critical metals near d=3+1
dc.creator.none.fl_str_mv Fitzpatrick, A. Liam
Kachru, Shamit
Kaplan, Jared
Raghu, S.
Torroba, Gonzalo
Wang, Huajia
author Fitzpatrick, A. Liam
author_facet Fitzpatrick, A. Liam
Kachru, Shamit
Kaplan, Jared
Raghu, S.
Torroba, Gonzalo
Wang, Huajia
author_role author
author2 Kachru, Shamit
Kaplan, Jared
Raghu, S.
Torroba, Gonzalo
Wang, Huajia
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Superconductivity
Quantum Metals
Non-Fermi Liquid
topic Superconductivity
Quantum Metals
Non-Fermi Liquid
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 study the dynamics of a quantum critical boson coupled to a Fermi surface in intermediate energy regimes where the Landau damping of the boson can be parametrically controlled, either via large Fermi velocity or by large-N techniques. We develop a systematic approach to the BCS instability of such systems, including careful treatment of the enhanced log2 and log3 singularities which appear already at 1-loop. These singularities arise due to the exchange of a critical boson in the Cooper channel and are absent in Fermi liquid theory. We also treat possible instabilities to charge density wave (CDW) formation, and compare the scales BCS and CDW of the onset of the instabilities in different parametric regimes. We address the question of whether the dressing of the fermions into a non-Fermi liquid via interactions with the order parameter field can happen at energies >BCS,CDW.
Fil: Fitzpatrick, A. Liam. University of Stanford; Estados Unidos
Fil: Kachru, Shamit. University of Stanford; Estados Unidos
Fil: Kaplan, Jared. University Johns Hopkins; Estados Unidos
Fil: Raghu, S.. University of Stanford; Estados Unidos
Fil: Torroba, Gonzalo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Wang, Huajia. University of Stanford; Estados Unidos
description We study the dynamics of a quantum critical boson coupled to a Fermi surface in intermediate energy regimes where the Landau damping of the boson can be parametrically controlled, either via large Fermi velocity or by large-N techniques. We develop a systematic approach to the BCS instability of such systems, including careful treatment of the enhanced log2 and log3 singularities which appear already at 1-loop. These singularities arise due to the exchange of a critical boson in the Cooper channel and are absent in Fermi liquid theory. We also treat possible instabilities to charge density wave (CDW) formation, and compare the scales BCS and CDW of the onset of the instabilities in different parametric regimes. We address the question of whether the dressing of the fermions into a non-Fermi liquid via interactions with the order parameter field can happen at energies >BCS,CDW.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
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/11336/54195
Fitzpatrick, A. Liam; Kachru, Shamit; Kaplan, Jared; Raghu, S.; Torroba, Gonzalo; et al.; Enhanced pairing of quantum critical metals near d=3+1; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 92; 4; 7-2015; 1-14; 045118
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54195
identifier_str_mv Fitzpatrick, A. Liam; Kachru, Shamit; Kaplan, Jared; Raghu, S.; Torroba, Gonzalo; et al.; Enhanced pairing of quantum critical metals near d=3+1; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 92; 4; 7-2015; 1-14; 045118
1098-0121
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.92.045118
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.045118
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
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