Quantum phase diagram of Shiba impurities from bosonization
- Autores
- Bortolin, Tomás Sebastián; Iucci, Carlos Aníbal; Lobos, Alejandro M.
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A characteristic feature of magnetic impurities in superconductors is the existence of a spin- and paritychanging quantum phase transition (known as “0-π” transition) which has been observed in scanning tunneling microscopy (STM) and quantum transport experiments. Using the Abelian bosonization technique, here we analyze the ground-state properties and the quantum phase diagram of an artificial “Shiba impurity” in a onedimensional superconductor. Within the bosonization framework, the ground-state properties are determined by simple solitonlike solutions of the classical equations of motion of the bosonic fields, whose topological charge is related to the spin and fermion-parity quantum numbers. Interestingly, the same theoretical framework can be used in the case of a bulk superconductor, where previous results can be rederived in an elegant fashion. Our results indicate that the quantum phase diagram of a magnetic impurity in the superconductor can be strongly affected by geometrical and dimensional effects. Exploiting this fact, in the one-dimensional case we propose an experimental superconducting setup in which a novel parity-preserving, spin-changing “0-0” transition is predicted.
Instituto de Física La Plata - Materia
- Física
- Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/143855
Ver los metadatos del registro completo
id |
SEDICI_48d6a9b2c7640b8c15f6acdb480018ba |
---|---|
oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/143855 |
network_acronym_str |
SEDICI |
repository_id_str |
1329 |
network_name_str |
SEDICI (UNLP) |
spelling |
Quantum phase diagram of Shiba impurities from bosonizationBortolin, Tomás SebastiánIucci, Carlos AníbalLobos, Alejandro M.FísicaA characteristic feature of magnetic impurities in superconductors is the existence of a spin- and paritychanging quantum phase transition (known as “0-π” transition) which has been observed in scanning tunneling microscopy (STM) and quantum transport experiments. Using the Abelian bosonization technique, here we analyze the ground-state properties and the quantum phase diagram of an artificial “Shiba impurity” in a onedimensional superconductor. Within the bosonization framework, the ground-state properties are determined by simple solitonlike solutions of the classical equations of motion of the bosonic fields, whose topological charge is related to the spin and fermion-parity quantum numbers. Interestingly, the same theoretical framework can be used in the case of a bulk superconductor, where previous results can be rederived in an elegant fashion. Our results indicate that the quantum phase diagram of a magnetic impurity in the superconductor can be strongly affected by geometrical and dimensional effects. Exploiting this fact, in the one-dimensional case we propose an experimental superconducting setup in which a novel parity-preserving, spin-changing “0-0” transition is predicted.Instituto de Física La Plata2019-10-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/143855enginfo:eu-repo/semantics/altIdentifier/issn/2469-9950info:eu-repo/semantics/altIdentifier/issn/2469-9969info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevb.100.155111info:eu-repo/semantics/altIdentifier/arxiv/1904.02834info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:27Zoai:sedici.unlp.edu.ar:10915/143855Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:28.165SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Quantum phase diagram of Shiba impurities from bosonization |
title |
Quantum phase diagram of Shiba impurities from bosonization |
spellingShingle |
Quantum phase diagram of Shiba impurities from bosonization Bortolin, Tomás Sebastián Física |
title_short |
Quantum phase diagram of Shiba impurities from bosonization |
title_full |
Quantum phase diagram of Shiba impurities from bosonization |
title_fullStr |
Quantum phase diagram of Shiba impurities from bosonization |
title_full_unstemmed |
Quantum phase diagram of Shiba impurities from bosonization |
title_sort |
Quantum phase diagram of Shiba impurities from bosonization |
dc.creator.none.fl_str_mv |
Bortolin, Tomás Sebastián Iucci, Carlos Aníbal Lobos, Alejandro M. |
author |
Bortolin, Tomás Sebastián |
author_facet |
Bortolin, Tomás Sebastián Iucci, Carlos Aníbal Lobos, Alejandro M. |
author_role |
author |
author2 |
Iucci, Carlos Aníbal Lobos, Alejandro M. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Física |
topic |
Física |
dc.description.none.fl_txt_mv |
A characteristic feature of magnetic impurities in superconductors is the existence of a spin- and paritychanging quantum phase transition (known as “0-π” transition) which has been observed in scanning tunneling microscopy (STM) and quantum transport experiments. Using the Abelian bosonization technique, here we analyze the ground-state properties and the quantum phase diagram of an artificial “Shiba impurity” in a onedimensional superconductor. Within the bosonization framework, the ground-state properties are determined by simple solitonlike solutions of the classical equations of motion of the bosonic fields, whose topological charge is related to the spin and fermion-parity quantum numbers. Interestingly, the same theoretical framework can be used in the case of a bulk superconductor, where previous results can be rederived in an elegant fashion. Our results indicate that the quantum phase diagram of a magnetic impurity in the superconductor can be strongly affected by geometrical and dimensional effects. Exploiting this fact, in the one-dimensional case we propose an experimental superconducting setup in which a novel parity-preserving, spin-changing “0-0” transition is predicted. Instituto de Física La Plata |
description |
A characteristic feature of magnetic impurities in superconductors is the existence of a spin- and paritychanging quantum phase transition (known as “0-π” transition) which has been observed in scanning tunneling microscopy (STM) and quantum transport experiments. Using the Abelian bosonization technique, here we analyze the ground-state properties and the quantum phase diagram of an artificial “Shiba impurity” in a onedimensional superconductor. Within the bosonization framework, the ground-state properties are determined by simple solitonlike solutions of the classical equations of motion of the bosonic fields, whose topological charge is related to the spin and fermion-parity quantum numbers. Interestingly, the same theoretical framework can be used in the case of a bulk superconductor, where previous results can be rederived in an elegant fashion. Our results indicate that the quantum phase diagram of a magnetic impurity in the superconductor can be strongly affected by geometrical and dimensional effects. Exploiting this fact, in the one-dimensional case we propose an experimental superconducting setup in which a novel parity-preserving, spin-changing “0-0” transition is predicted. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/143855 |
url |
http://sedici.unlp.edu.ar/handle/10915/143855 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/2469-9950 info:eu-repo/semantics/altIdentifier/issn/2469-9969 info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevb.100.155111 info:eu-repo/semantics/altIdentifier/arxiv/1904.02834 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
reponame_str |
SEDICI (UNLP) |
collection |
SEDICI (UNLP) |
instname_str |
Universidad Nacional de La Plata |
instacron_str |
UNLP |
institution |
UNLP |
repository.name.fl_str_mv |
SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
_version_ |
1844616204339118080 |
score |
13.070432 |