Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene

Autores
Datta, Anushree; Calderón, M. J.; Camjayi, Alberto; Bascones, E.
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Among the variety of correlated states exhibited by twisted bilayer graphene, cascades in the spectroscopic properties and in the electronic compressibility occur over larger ranges of energy, twist angle and temperature compared to other effects. This suggests a hierarchy of phenomena. Using a combined dynamical mean-field theory and Hartree calculation, we show that the spectral weight reorganisation associated with the formation of local moments and heavy quasiparticles can explain the cascade of electronic resets without invoking symmetry breaking orders. The phenomena reproduced here include the cascade flow of spectral weight, the oscillations of remote band energies, and the asymmetric jumps of the inverse compressibility. We also predict a strong momentum differentiation in the incoherent spectral weight associated with the fragile topology of twisted bilayer graphene.
Fil: Datta, Anushree. Instituto de Ciencia de Materiales de Madrid; España. Universite Paris-Saclay ; . Université Paris-Cité; Francia
Fil: Calderón, M. J.. Instituto de Ciencia de Materiales de Madrid; España
Fil: Camjayi, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Ciclo Basico Comun. Departamento de Física, Química y Matemática; Argentina
Fil: Bascones, E.. Instituto de Ciencia de Materiales de Madrid; España
Materia
BILAYER
GRAPHENE
MAGIC
CASCADES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/228495
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer grapheneDatta, AnushreeCalderón, M. J.Camjayi, AlbertoBascones, E.BILAYERGRAPHENEMAGICCASCADEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Among the variety of correlated states exhibited by twisted bilayer graphene, cascades in the spectroscopic properties and in the electronic compressibility occur over larger ranges of energy, twist angle and temperature compared to other effects. This suggests a hierarchy of phenomena. Using a combined dynamical mean-field theory and Hartree calculation, we show that the spectral weight reorganisation associated with the formation of local moments and heavy quasiparticles can explain the cascade of electronic resets without invoking symmetry breaking orders. The phenomena reproduced here include the cascade flow of spectral weight, the oscillations of remote band energies, and the asymmetric jumps of the inverse compressibility. We also predict a strong momentum differentiation in the incoherent spectral weight associated with the fragile topology of twisted bilayer graphene.Fil: Datta, Anushree. Instituto de Ciencia de Materiales de Madrid; España. Universite Paris-Saclay ; . Université Paris-Cité; FranciaFil: Calderón, M. J.. Instituto de Ciencia de Materiales de Madrid; EspañaFil: Camjayi, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Ciclo Basico Comun. Departamento de Física, Química y Matemática; ArgentinaFil: Bascones, E.. Instituto de Ciencia de Materiales de Madrid; EspañaNature Research2023-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/228495Datta, Anushree; Calderón, M. J.; Camjayi, Alberto; Bascones, E.; Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene; Nature Research; Nature Communications; 14; 1; 8-2023; 1-82041-1723CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41467-023-40754-4info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-40754-4info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T10:46:32Zoai:ri.conicet.gov.ar:11336/228495instacron: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:34982025-09-17 10:46:32.617CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
title Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
spellingShingle Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
Datta, Anushree
BILAYER
GRAPHENE
MAGIC
CASCADES
title_short Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
title_full Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
title_fullStr Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
title_full_unstemmed Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
title_sort Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene
dc.creator.none.fl_str_mv Datta, Anushree
Calderón, M. J.
Camjayi, Alberto
Bascones, E.
author Datta, Anushree
author_facet Datta, Anushree
Calderón, M. J.
Camjayi, Alberto
Bascones, E.
author_role author
author2 Calderón, M. J.
Camjayi, Alberto
Bascones, E.
author2_role author
author
author
dc.subject.none.fl_str_mv BILAYER
GRAPHENE
MAGIC
CASCADES
topic BILAYER
GRAPHENE
MAGIC
CASCADES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Among the variety of correlated states exhibited by twisted bilayer graphene, cascades in the spectroscopic properties and in the electronic compressibility occur over larger ranges of energy, twist angle and temperature compared to other effects. This suggests a hierarchy of phenomena. Using a combined dynamical mean-field theory and Hartree calculation, we show that the spectral weight reorganisation associated with the formation of local moments and heavy quasiparticles can explain the cascade of electronic resets without invoking symmetry breaking orders. The phenomena reproduced here include the cascade flow of spectral weight, the oscillations of remote band energies, and the asymmetric jumps of the inverse compressibility. We also predict a strong momentum differentiation in the incoherent spectral weight associated with the fragile topology of twisted bilayer graphene.
Fil: Datta, Anushree. Instituto de Ciencia de Materiales de Madrid; España. Universite Paris-Saclay ; . Université Paris-Cité; Francia
Fil: Calderón, M. J.. Instituto de Ciencia de Materiales de Madrid; España
Fil: Camjayi, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Ciclo Basico Comun. Departamento de Física, Química y Matemática; Argentina
Fil: Bascones, E.. Instituto de Ciencia de Materiales de Madrid; España
description Among the variety of correlated states exhibited by twisted bilayer graphene, cascades in the spectroscopic properties and in the electronic compressibility occur over larger ranges of energy, twist angle and temperature compared to other effects. This suggests a hierarchy of phenomena. Using a combined dynamical mean-field theory and Hartree calculation, we show that the spectral weight reorganisation associated with the formation of local moments and heavy quasiparticles can explain the cascade of electronic resets without invoking symmetry breaking orders. The phenomena reproduced here include the cascade flow of spectral weight, the oscillations of remote band energies, and the asymmetric jumps of the inverse compressibility. We also predict a strong momentum differentiation in the incoherent spectral weight associated with the fragile topology of twisted bilayer graphene.
publishDate 2023
dc.date.none.fl_str_mv 2023-08
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/11336/228495
Datta, Anushree; Calderón, M. J.; Camjayi, Alberto; Bascones, E.; Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene; Nature Research; Nature Communications; 14; 1; 8-2023; 1-8
2041-1723
CONICET Digital
CONICET
url http://hdl.handle.net/11336/228495
identifier_str_mv Datta, Anushree; Calderón, M. J.; Camjayi, Alberto; Bascones, E.; Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene; Nature Research; Nature Communications; 14; 1; 8-2023; 1-8
2041-1723
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41467-023-40754-4
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-40754-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature Research
publisher.none.fl_str_mv Nature Research
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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score 13.001348

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