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DC Field | Value | Language |
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dc.contributor.author | Seridonio, A. C. | - |
dc.contributor.author | Yoshida, M. | - |
dc.contributor.author | Oliveira, L. N. | - |
dc.date.accessioned | 2013-09-30T18:50:59Z | - |
dc.date.accessioned | 2014-05-20T14:16:41Z | - |
dc.date.accessioned | 2016-10-25T17:39:37Z | - |
dc.date.available | 2013-09-30T18:50:59Z | - |
dc.date.available | 2014-05-20T14:16:41Z | - |
dc.date.available | 2016-10-25T17:39:37Z | - |
dc.date.issued | 2009-12-01 | - |
dc.identifier | http://dx.doi.org/10.1103/PhysRevB.80.235318 | - |
dc.identifier.citation | Physical Review B. College Pk: Amer Physical Soc, v. 80, n. 23, p. 13, 2009. | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/11449/25020 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/25020 | - |
dc.description.abstract | A numerical renormalization-group study of the conductance through a quantum wire containing noninteracting electrons side-coupled to a quantum dot is reported. The temperature and the dot-energy dependence of the conductance are examined in the light of a recently derived linear mapping between the temperature-dependent conductance and the universal function describing the conductance for the symmetric Anderson model of a quantum wire with an embedded quantum dot. Two conduction paths, one traversing the wire, the other a bypass through the quantum dot, are identified. A gate potential applied to the quantum wire is shown to control the current through the bypass. When the potential favors transport through the wire, the conductance in the Kondo regime rises from nearly zero at low temperatures to nearly ballistic at high temperatures. When it favors the dot, the pattern is reversed: the conductance decays from nearly ballistic to nearly zero. When comparable currents flow through the two channels, the conductance is nearly temperature independent in the Kondo regime, and Fano antiresonances in the fixed-temperature plots of the conductance as a function of the dot-energy signal interference between them. Throughout the Kondo regime and, at low temperatures, even in the mixed-valence regime, the numerical data are in excellent agreement with the universal mapping. | en |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | - |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | - |
dc.format.extent | 13 | - |
dc.language.iso | eng | - |
dc.publisher | Amer Physical Soc | - |
dc.source | Web of Science | - |
dc.subject | Anderson model | en |
dc.subject | ballistic transport | en |
dc.subject | electric admittance | en |
dc.subject | electrical conductivity transitions | en |
dc.subject | Kondo effect | en |
dc.subject | mixed conductivity | en |
dc.subject | mixed valence compounds | en |
dc.subject | quantum dots | en |
dc.subject | quantum wires | en |
dc.subject | renormalisation | en |
dc.title | Universal zero-bias conductance through a quantum wire side-coupled to a quantum dot | en |
dc.type | outro | - |
dc.contributor.institution | Universidade de São Paulo (USP) | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | Univ São Paulo, Inst Fis Sao Carlos, Dept Fis & Informat, BR-369 Sao Carlos, SP, Brazil | - |
dc.description.affiliation | Univ Estadual Paulista, Inst Geociencias & Ciencias Exatas, Dept Fis, BR-13500 Rio Claro, SP, Brazil | - |
dc.description.affiliationUnesp | Univ Estadual Paulista, Inst Geociencias & Ciencias Exatas, Dept Fis, BR-13500 Rio Claro, SP, Brazil | - |
dc.identifier.doi | 10.1103/PhysRevB.80.235318 | - |
dc.identifier.wos | WOS:000273228800079 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.identifier.file | WOS000273228800079.pdf | - |
dc.relation.ispartof | Physical Review B | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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