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Abstract:

Persistent currents in mesoscopic metallic rings induced by static magnetic fields are investigated by means of a Hamiltonian which incorporates diagonal disorder and the electron-electron interaction through a Hubbard term (U). Correlations are included up to second order perturbation theory which is shown to work accurately for U of the order of the hopping integral. If disorder is not very strong, interactions increase the current up to near its value for a clean metal. Averaging over ring lengths eliminates the first Fourier component of the current and reduces its value, which remains low after interactions are included. Copyright © 1996 Elsevier Science Ltd.

Registro:

Documento: Artículo
Título:Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings
Autor:Chiappe, G.; Vergés, J.A.; Louis, E.
Filiación:Universidad de Buenos Aires, Ciudad Universitaria, Pabellón I, 1428 Capital Federal, Buenos Aires, Argentina
Depto. de Física Aplicada, Universidad de Alicante, Apartado 99, E-03080 Alicante, Spain
Instituto de Ciencia de Materiales, Consejo Sup. de Invest. Cie., Univ. Autónoma de Madrid, E-28049 Madrid, Spain
Palabras clave:A. nanostructures; D. electron-electron interactions; D. electronic transport; Correlation methods; Electric currents; Electrons; Fourier transforms; Magnetic field effects; Perturbation techniques; Electron electron interactions; Hamiltonian; Hubbard term; Nanostructured materials
Año:1996
Volumen:99
Número:10
Página de inicio:717
Página de fin:721
DOI: http://dx.doi.org/10.1016/0038-1098(96)00181-0
Título revista:Solid State Communications
Título revista abreviado:Solid State Commun
ISSN:00381098
CODEN:SSCOA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00381098_v99_n10_p717_Chiappe

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Citas:

---------- APA ----------
Chiappe, G., Vergés, J.A. & Louis, E. (1996) . Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings. Solid State Communications, 99(10), 717-721.
http://dx.doi.org/10.1016/0038-1098(96)00181-0
---------- CHICAGO ----------
Chiappe, G., Vergés, J.A., Louis, E. "Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings" . Solid State Communications 99, no. 10 (1996) : 717-721.
http://dx.doi.org/10.1016/0038-1098(96)00181-0
---------- MLA ----------
Chiappe, G., Vergés, J.A., Louis, E. "Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings" . Solid State Communications, vol. 99, no. 10, 1996, pp. 717-721.
http://dx.doi.org/10.1016/0038-1098(96)00181-0
---------- VANCOUVER ----------
Chiappe, G., Vergés, J.A., Louis, E. Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings. Solid State Commun. 1996;99(10):717-721.
http://dx.doi.org/10.1016/0038-1098(96)00181-0