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Abstract:

The Bohm-Aharonov effect in a mesoscopic ring containing a double-barrier structure in its upper part is investigated. The interference between electrons propagating along different sides of the ring is modified by the presence of a double barrier. A local Coulomb interaction, U, is included to describe the highly localized electrons at the well and an Abrikosov-Suhl (AS) resonance appears at low temperatures. So, in this energy range the current is flux dependent. Above the Kondo temperature TK the AS resonance disappears and the flux-independent behavior is recovered. The current is studied as a function of magnetic flux, gate potential and position of the Fermi level.

Registro:

Documento: Artículo
Título:The Kondo effect in Bohm-Aharonov resonant tunneling devices
Autor:Iglesias, J.R.; Anda, E.V.; Davidovich, M.A.; Chiappe, G.
Filiación:Instituto de Física, Univ. Federal do Rio Grande do Sul, C.P. 15051, 91501-970 Porto Alegre, Brazil
Instituto de Física, Universidade Federal Fluminense, 24210-340 Niterói, Brazil
Departamento de Física, Pont. Univ. Catol. do Rio de Janeiro, C.P. 38071, 22452-970, Rio de Janeiro, Brazil
Departamento de Física, Universidad de Buenos Aires, C.P. 1428, Nuñez, Buenos Aires, Argentina
Palabras clave:Bohm-Aharonov effect; Kondo effect; Kondo resonance; Mesoscopic ring; Electric currents; Electron resonance; Fermi level; Magnetic field effects; Thermal effects; Abrikosov Suhl resonance; Bohm Aharonov effect; Coulomb interactions; Kondo effect; Kondo resonance; Kondo temperature; Magnetic flux; Resonant tunneling devices; Electron tunneling
Año:1997
Volumen:230-232
Página de inicio:478
Página de fin:481
DOI: http://dx.doi.org/10.1016/S0921-4526(96)00634-5
Título revista:Physica B: Condensed Matter
Título revista abreviado:Phys B Condens Matter
ISSN:09214526
CODEN:PHYBE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214526_v230-232_n_p478_Iglesias

Referencias:

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Citas:

---------- APA ----------
Iglesias, J.R., Anda, E.V., Davidovich, M.A. & Chiappe, G. (1997) . The Kondo effect in Bohm-Aharonov resonant tunneling devices. Physica B: Condensed Matter, 230-232, 478-481.
http://dx.doi.org/10.1016/S0921-4526(96)00634-5
---------- CHICAGO ----------
Iglesias, J.R., Anda, E.V., Davidovich, M.A., Chiappe, G. "The Kondo effect in Bohm-Aharonov resonant tunneling devices" . Physica B: Condensed Matter 230-232 (1997) : 478-481.
http://dx.doi.org/10.1016/S0921-4526(96)00634-5
---------- MLA ----------
Iglesias, J.R., Anda, E.V., Davidovich, M.A., Chiappe, G. "The Kondo effect in Bohm-Aharonov resonant tunneling devices" . Physica B: Condensed Matter, vol. 230-232, 1997, pp. 478-481.
http://dx.doi.org/10.1016/S0921-4526(96)00634-5
---------- VANCOUVER ----------
Iglesias, J.R., Anda, E.V., Davidovich, M.A., Chiappe, G. The Kondo effect in Bohm-Aharonov resonant tunneling devices. Phys B Condens Matter. 1997;230-232:478-481.
http://dx.doi.org/10.1016/S0921-4526(96)00634-5