Abstract:
The transport properties of a quantum wire interacting with a lateral two-level quantum dot are presented. A cluster including the dot and its vicinity is diagonalized and embedded into the rest of the system. The result is numerically exact for T = 0. The wire conductance is calculated for all different states of charge and spin of the quantum dot. We find that the Kondo correlation is stronger for a dot spin SD ≈ 1 than for SD ≈ 1/2. In both cases the wire current is totally quenched by the Kondo effect. When the dot is in the mixed-valence regime and 1/2 ≲ SD ≲ 1, the wire conductance is partially quenched except in a very small region of the gate potential where it reaches the maximum value e2/h.
Registro:
| Documento: |
Artículo
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| Título: | Effect of the charge and spin of a lateral quantum dot on a wire current |
| Autor: | Davidovich, M.A.; Büsser, C.A.; Anda, E.V.; Chiappe, G. |
| Filiación: | Departamento de Física, Pontificia Universidade Católica do Rio de Janeiro, C.P. 38071, 22452-970, Rio de Janeiro, RJ, Brazil
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428, Buenos Aires, Argentina
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| Año: | 2002
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| Volumen: | 232
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| Número: | 1
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| Página de inicio: | 66
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| Página de fin: | 70
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| DOI: |
http://dx.doi.org/10.1002/1521-3951(200207)232:1<66::AID-PSSB66>3.0.CO;2-P |
| Título revista: | Physica Status Solidi (B) Basic Research
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| Título revista abreviado: | Phys. Status Solidi B Basic Res.
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| ISSN: | 03701972
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03701972_v232_n1_p66_Davidovich |
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Citas:
---------- APA ----------
Davidovich, M.A., Büsser, C.A., Anda, E.V. & Chiappe, G.
(2002)
. Effect of the charge and spin of a lateral quantum dot on a wire current. Physica Status Solidi (B) Basic Research, 232(1), 66-70.
http://dx.doi.org/10.1002/1521-3951(200207)232:1<66::AID-PSSB66>3.0.CO;2-P---------- CHICAGO ----------
Davidovich, M.A., Büsser, C.A., Anda, E.V., Chiappe, G.
"Effect of the charge and spin of a lateral quantum dot on a wire current"
. Physica Status Solidi (B) Basic Research 232, no. 1
(2002) : 66-70.
http://dx.doi.org/10.1002/1521-3951(200207)232:1<66::AID-PSSB66>3.0.CO;2-P---------- MLA ----------
Davidovich, M.A., Büsser, C.A., Anda, E.V., Chiappe, G.
"Effect of the charge and spin of a lateral quantum dot on a wire current"
. Physica Status Solidi (B) Basic Research, vol. 232, no. 1, 2002, pp. 66-70.
http://dx.doi.org/10.1002/1521-3951(200207)232:1<66::AID-PSSB66>3.0.CO;2-P---------- VANCOUVER ----------
Davidovich, M.A., Büsser, C.A., Anda, E.V., Chiappe, G. Effect of the charge and spin of a lateral quantum dot on a wire current. Phys. Status Solidi B Basic Res. 2002;232(1):66-70.
http://dx.doi.org/10.1002/1521-3951(200207)232:1<66::AID-PSSB66>3.0.CO;2-P
