Quantitative comparison of Anderson impurity solvers applied to transport in quantum dots

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal Fluminense (UFF)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorDe Souza Melo, Bruno Max-
Autor(es): dc.creatorDa Silva, Luis G. G. V. Dias-
Autor(es): dc.creatorRocha, Alexandre Reily [UNESP]-
Autor(es): dc.creatorLewenkopf, Caio-
Data de aceite: dc.date.accessioned2022-02-22T00:28:40Z-
Data de disponibilização: dc.date.available2022-02-22T00:28:40Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1088/1361-648X/ab5773-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199884-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199884-
Descrição: dc.descriptionWe study the single impurity Anderson model (SIAM) using the equations of motion method (EOM), the non-crossing approximation (NCA), the one-crossing approximation (OCA), and Wilson's numerical renormalization group (NRG). We calculate the density of states and the linear conductance focusing on their dependence on the chemical potential and on the temperature paying special attention to the Kondo and Coulomb blockade regimes for a large range of model parameters. We report that some standard approximations based on the EOM technique display a rather unexpected poor behavior in the Coulomb blockade regime even at high temperatures. Our study offers a critical comparison between the different methods as well as a detailed compilation of the shortcomings and limitations due the approximations involved in each technique, thus allowing for a cost-benefit analysis of the different solvers that considers both numerical precision and computational performance.-
Descrição: dc.descriptionInstituto de Física Universidade Federal Fluminense-
Descrição: dc.descriptionUniversidade de Sao Paulo Instituto de Fisica, Rua do Matao 1371-
Descrição: dc.descriptionInstituto de Física Teórica Sao Paulo State University (UNESP)-
Descrição: dc.descriptionInstituto de Física Teórica Sao Paulo State University (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationJournal of Physics Condensed Matter-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectelectronic transport-
Palavras-chave: dc.subjectimpurity solvers-
Palavras-chave: dc.subjectmolecular electronics-
Palavras-chave: dc.subjectquantum dots-
Título: dc.titleQuantitative comparison of Anderson impurity solvers applied to transport in quantum dots-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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