Normal state electronic properties of LaO1−xFxBiS2 superconductors

Autores
Querales Flores, Jose Daniel; Ventura, Cecilia Ileana; Citro, R.; Rodríguez Núñez, J. J.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A good description of the electronic structure of BiS2-based superconductors is essential to understand their phase diagram, normal state and superconducting properties. To describe the first reports of normal state electronic structure features from angle resolved photoemission spectroscopy (ARPES) in LaO1-xFxBiS2, we used a minimal microscopic model to study their low energy properties. It includes the two effective tight-binding bands proposed by Usui et al., Phys. Rev. B, 86, 2012, 220501(R), and we added moderate intra- A nd inter-orbital electron correlations related to Bi-(pY, pX) and S-(pY, pX) orbitals. We calculated the electron Green's functions using their equations of motion, which we decoupled in second-order of perturbations on the correlations. We determined the normal state spectral density function and total density of states for LaO1-xFxBiS2, focusing on the description of the k-dependence, effect of doping, and the prediction of the temperature dependence of spectral properties. Including moderate electron correlations, improves the description of the few experimental ARPES and soft X-ray photoemission data available for LaO1-xFxBiS2. Our analytical approximation enabled us to calculate the spectral density around the conduction band minimum at k→0=(0.45π,0.45π), and to predict the temperature dependence of the spectral properties at different BZ points, which might be verified by temperature-dependent ARPES.
Fil: Querales Flores, Jose Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Ventura, Cecilia Ileana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Citro, R.. Universidad Nacional de Río Negro; Argentina
Fil: Rodríguez Núñez, J. J.. Universidad de Carabobo; Venezuela
Materia
Bis2-Based Superconductors
Electron Correlations
Electronic Structure
Normal State Electronic Properties
Spectral Density Function
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:11336/59954
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/59954
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Normal state electronic properties of LaO1−xFxBiS2 superconductorsQuerales Flores, Jose DanielVentura, Cecilia IleanaCitro, R.Rodríguez Núñez, J. J.Bis2-Based SuperconductorsElectron CorrelationsElectronic StructureNormal State Electronic PropertiesSpectral Density Functionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A good description of the electronic structure of BiS2-based superconductors is essential to understand their phase diagram, normal state and superconducting properties. To describe the first reports of normal state electronic structure features from angle resolved photoemission spectroscopy (ARPES) in LaO1-xFxBiS2, we used a minimal microscopic model to study their low energy properties. It includes the two effective tight-binding bands proposed by Usui et al., Phys. Rev. B, 86, 2012, 220501(R), and we added moderate intra- A nd inter-orbital electron correlations related to Bi-(pY, pX) and S-(pY, pX) orbitals. We calculated the electron Green's functions using their equations of motion, which we decoupled in second-order of perturbations on the correlations. We determined the normal state spectral density function and total density of states for LaO1-xFxBiS2, focusing on the description of the k-dependence, effect of doping, and the prediction of the temperature dependence of spectral properties. Including moderate electron correlations, improves the description of the few experimental ARPES and soft X-ray photoemission data available for LaO1-xFxBiS2. Our analytical approximation enabled us to calculate the spectral density around the conduction band minimum at k→0=(0.45π,0.45π), and to predict the temperature dependence of the spectral properties at different BZ points, which might be verified by temperature-dependent ARPES.Fil: Querales Flores, Jose Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Ventura, Cecilia Ileana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Citro, R.. Universidad Nacional de Río Negro; ArgentinaFil: Rodríguez Núñez, J. J.. Universidad de Carabobo; VenezuelaElsevier Science2016-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/59954Querales Flores, Jose Daniel; Ventura, Cecilia Ileana; Citro, R.; Rodríguez Núñez, J. J.; Normal state electronic properties of LaO1−xFxBiS2 superconductors; Elsevier Science; Physica B: Condensed Matter; 488; 5-2016; 32-420921-4526CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physb.2016.01.025info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0921452616300254info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:44:35Zoai:ri.conicet.gov.ar:11336/59954instacron: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:34982025-09-29 09:44:35.935CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Normal state electronic properties of LaO1−xFxBiS2 superconductors
title Normal state electronic properties of LaO1−xFxBiS2 superconductors
spellingShingle Normal state electronic properties of LaO1−xFxBiS2 superconductors
Querales Flores, Jose Daniel
Bis2-Based Superconductors
Electron Correlations
Electronic Structure
Normal State Electronic Properties
Spectral Density Function
title_short Normal state electronic properties of LaO1−xFxBiS2 superconductors
title_full Normal state electronic properties of LaO1−xFxBiS2 superconductors
title_fullStr Normal state electronic properties of LaO1−xFxBiS2 superconductors
title_full_unstemmed Normal state electronic properties of LaO1−xFxBiS2 superconductors
title_sort Normal state electronic properties of LaO1−xFxBiS2 superconductors
dc.creator.none.fl_str_mv Querales Flores, Jose Daniel
Ventura, Cecilia Ileana
Citro, R.
Rodríguez Núñez, J. J.
author Querales Flores, Jose Daniel
author_facet Querales Flores, Jose Daniel
Ventura, Cecilia Ileana
Citro, R.
Rodríguez Núñez, J. J.
author_role author
author2 Ventura, Cecilia Ileana
Citro, R.
Rodríguez Núñez, J. J.
author2_role author
author
author
dc.subject.none.fl_str_mv Bis2-Based Superconductors
Electron Correlations
Electronic Structure
Normal State Electronic Properties
Spectral Density Function
topic Bis2-Based Superconductors
Electron Correlations
Electronic Structure
Normal State Electronic Properties
Spectral Density Function
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A good description of the electronic structure of BiS2-based superconductors is essential to understand their phase diagram, normal state and superconducting properties. To describe the first reports of normal state electronic structure features from angle resolved photoemission spectroscopy (ARPES) in LaO1-xFxBiS2, we used a minimal microscopic model to study their low energy properties. It includes the two effective tight-binding bands proposed by Usui et al., Phys. Rev. B, 86, 2012, 220501(R), and we added moderate intra- A nd inter-orbital electron correlations related to Bi-(pY, pX) and S-(pY, pX) orbitals. We calculated the electron Green's functions using their equations of motion, which we decoupled in second-order of perturbations on the correlations. We determined the normal state spectral density function and total density of states for LaO1-xFxBiS2, focusing on the description of the k-dependence, effect of doping, and the prediction of the temperature dependence of spectral properties. Including moderate electron correlations, improves the description of the few experimental ARPES and soft X-ray photoemission data available for LaO1-xFxBiS2. Our analytical approximation enabled us to calculate the spectral density around the conduction band minimum at k→0=(0.45π,0.45π), and to predict the temperature dependence of the spectral properties at different BZ points, which might be verified by temperature-dependent ARPES.
Fil: Querales Flores, Jose Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Ventura, Cecilia Ileana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Citro, R.. Universidad Nacional de Río Negro; Argentina
Fil: Rodríguez Núñez, J. J.. Universidad de Carabobo; Venezuela
description A good description of the electronic structure of BiS2-based superconductors is essential to understand their phase diagram, normal state and superconducting properties. To describe the first reports of normal state electronic structure features from angle resolved photoemission spectroscopy (ARPES) in LaO1-xFxBiS2, we used a minimal microscopic model to study their low energy properties. It includes the two effective tight-binding bands proposed by Usui et al., Phys. Rev. B, 86, 2012, 220501(R), and we added moderate intra- A nd inter-orbital electron correlations related to Bi-(pY, pX) and S-(pY, pX) orbitals. We calculated the electron Green's functions using their equations of motion, which we decoupled in second-order of perturbations on the correlations. We determined the normal state spectral density function and total density of states for LaO1-xFxBiS2, focusing on the description of the k-dependence, effect of doping, and the prediction of the temperature dependence of spectral properties. Including moderate electron correlations, improves the description of the few experimental ARPES and soft X-ray photoemission data available for LaO1-xFxBiS2. Our analytical approximation enabled us to calculate the spectral density around the conduction band minimum at k→0=(0.45π,0.45π), and to predict the temperature dependence of the spectral properties at different BZ points, which might be verified by temperature-dependent ARPES.
publishDate 2016
dc.date.none.fl_str_mv 2016-05
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/11336/59954
Querales Flores, Jose Daniel; Ventura, Cecilia Ileana; Citro, R.; Rodríguez Núñez, J. J.; Normal state electronic properties of LaO1−xFxBiS2 superconductors; Elsevier Science; Physica B: Condensed Matter; 488; 5-2016; 32-42
0921-4526
CONICET Digital
CONICET
url http://hdl.handle.net/11336/59954
identifier_str_mv Querales Flores, Jose Daniel; Ventura, Cecilia Ileana; Citro, R.; Rodríguez Núñez, J. J.; Normal state electronic properties of LaO1−xFxBiS2 superconductors; Elsevier Science; Physica B: Condensed Matter; 488; 5-2016; 32-42
0921-4526
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physb.2016.01.025
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0921452616300254
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 13.070432

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