Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order
- Autores
- Greco, Andres Francisco; Zeyher, Roland
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Using the large-N limit of the t–J model and also allowing for phonons and the electron–phonon interaction, we study the isotope effect α for coupling constants appropriate for YB2C3O y . We find that α has a minimum at optimal doping and increases strongly (slightly) towards the underdoped (overdoped) region. Using values for the electron–phonon interaction from the local density approximation we get good agreement for α as a function of T c and doping δ with recent experimental data in YB2C3O y . Our results strongly suggest that the large increase of α in the underdoped region is (a) caused by the shift of electronic spectral density from low to high energies associated with a competing phase (in our case a charge density wave) and the formation of a gap, and (b) compatible with the small electron–phonon coupling constants obtained from the local density approximation. We propose a similar explanation for the anomalous behavior of α in Sr-doped La2CuO4 near the doping 1/8.
Fil: Greco, Andres Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina
Fil: Zeyher, Roland. Max Planck Institut für Festkörperforschung; Alemania - Materia
-
Phonons
Cuprates superconductors
Pseudogap
Regime - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/13401
Ver los metadatos del registro completo
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Isotope effect on the superconducting critical temperature of cuprates in the presence of charge orderGreco, Andres FranciscoZeyher, RolandPhononsCuprates superconductorsPseudogapRegimehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Using the large-N limit of the t–J model and also allowing for phonons and the electron–phonon interaction, we study the isotope effect α for coupling constants appropriate for YB2C3O y . We find that α has a minimum at optimal doping and increases strongly (slightly) towards the underdoped (overdoped) region. Using values for the electron–phonon interaction from the local density approximation we get good agreement for α as a function of T c and doping δ with recent experimental data in YB2C3O y . Our results strongly suggest that the large increase of α in the underdoped region is (a) caused by the shift of electronic spectral density from low to high energies associated with a competing phase (in our case a charge density wave) and the formation of a gap, and (b) compatible with the small electron–phonon coupling constants obtained from the local density approximation. We propose a similar explanation for the anomalous behavior of α in Sr-doped La2CuO4 near the doping 1/8.Fil: Greco, Andres Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; ArgentinaFil: Zeyher, Roland. Max Planck Institut für Festkörperforschung; AlemaniaIop Publishing2015-11info: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/11336/13401Greco, Andres Francisco; Zeyher, Roland; Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order; Iop Publishing; Superconductor Science And Technology; 29; 1; 11-2015; 1-9; 0150020953-20481361-6668enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0953-2048/29/1/015002info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0953-2048/29/1/015002/metainfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/pdf/1511.05096.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:09Zoai:ri.conicet.gov.ar:11336/13401instacron: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 10:15:09.915CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order |
| title |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order |
| spellingShingle |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order Greco, Andres Francisco Phonons Cuprates superconductors Pseudogap Regime |
| title_short |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order |
| title_full |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order |
| title_fullStr |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order |
| title_full_unstemmed |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order |
| title_sort |
Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order |
| dc.creator.none.fl_str_mv |
Greco, Andres Francisco Zeyher, Roland |
| author |
Greco, Andres Francisco |
| author_facet |
Greco, Andres Francisco Zeyher, Roland |
| author_role |
author |
| author2 |
Zeyher, Roland |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Phonons Cuprates superconductors Pseudogap Regime |
| topic |
Phonons Cuprates superconductors Pseudogap Regime |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Using the large-N limit of the t–J model and also allowing for phonons and the electron–phonon interaction, we study the isotope effect α for coupling constants appropriate for YB2C3O y . We find that α has a minimum at optimal doping and increases strongly (slightly) towards the underdoped (overdoped) region. Using values for the electron–phonon interaction from the local density approximation we get good agreement for α as a function of T c and doping δ with recent experimental data in YB2C3O y . Our results strongly suggest that the large increase of α in the underdoped region is (a) caused by the shift of electronic spectral density from low to high energies associated with a competing phase (in our case a charge density wave) and the formation of a gap, and (b) compatible with the small electron–phonon coupling constants obtained from the local density approximation. We propose a similar explanation for the anomalous behavior of α in Sr-doped La2CuO4 near the doping 1/8. Fil: Greco, Andres Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina Fil: Zeyher, Roland. Max Planck Institut für Festkörperforschung; Alemania |
| description |
Using the large-N limit of the t–J model and also allowing for phonons and the electron–phonon interaction, we study the isotope effect α for coupling constants appropriate for YB2C3O y . We find that α has a minimum at optimal doping and increases strongly (slightly) towards the underdoped (overdoped) region. Using values for the electron–phonon interaction from the local density approximation we get good agreement for α as a function of T c and doping δ with recent experimental data in YB2C3O y . Our results strongly suggest that the large increase of α in the underdoped region is (a) caused by the shift of electronic spectral density from low to high energies associated with a competing phase (in our case a charge density wave) and the formation of a gap, and (b) compatible with the small electron–phonon coupling constants obtained from the local density approximation. We propose a similar explanation for the anomalous behavior of α in Sr-doped La2CuO4 near the doping 1/8. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-11 |
| 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/11336/13401 Greco, Andres Francisco; Zeyher, Roland; Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order; Iop Publishing; Superconductor Science And Technology; 29; 1; 11-2015; 1-9; 015002 0953-2048 1361-6668 |
| url |
http://hdl.handle.net/11336/13401 |
| identifier_str_mv |
Greco, Andres Francisco; Zeyher, Roland; Isotope effect on the superconducting critical temperature of cuprates in the presence of charge order; Iop Publishing; Superconductor Science And Technology; 29; 1; 11-2015; 1-9; 015002 0953-2048 1361-6668 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-2048/29/1/015002 info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0953-2048/29/1/015002/meta info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/pdf/1511.05096.pdf |
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Iop Publishing |
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Iop Publishing |
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