Effects of correlations and disorder on the persistent current in mesoscopic metallic rings
We study the influence of e-e interactions on persistent currents in mesoscopic metallic rings by means of a Hamiltonian which incorporates diagonal disorder (substitional impurities) and where correlations are included up to 2nd order perturbation theory. The results are depending on the degree of...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03650375_v84_n3_p227_Chiappe |
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todo:paper_03650375_v84_n3_p227_Chiappe2023-10-03T15:27:47Z Effects of correlations and disorder on the persistent current in mesoscopic metallic rings Chiappe, G. Verges, J.A. Louis, E. We study the influence of e-e interactions on persistent currents in mesoscopic metallic rings by means of a Hamiltonian which incorporates diagonal disorder (substitional impurities) and where correlations are included up to 2nd order perturbation theory. The results are depending on the degree of disorder. If the disorder introduced by the impurities is not very strong, e-e 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 amplitude, which remains low after interactions are included. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03650375_v84_n3_p227_Chiappe |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We study the influence of e-e interactions on persistent currents in mesoscopic metallic rings by means of a Hamiltonian which incorporates diagonal disorder (substitional impurities) and where correlations are included up to 2nd order perturbation theory. The results are depending on the degree of disorder. If the disorder introduced by the impurities is not very strong, e-e 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 amplitude, which remains low after interactions are included. |
| format |
JOUR |
| author |
Chiappe, G. Verges, J.A. Louis, E. |
| spellingShingle |
Chiappe, G. Verges, J.A. Louis, E. Effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| author_facet |
Chiappe, G. Verges, J.A. Louis, E. |
| author_sort |
Chiappe, G. |
| title |
Effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| title_short |
Effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| title_full |
Effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| title_fullStr |
Effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| title_full_unstemmed |
Effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| title_sort |
effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| url |
http://hdl.handle.net/20.500.12110/paper_03650375_v84_n3_p227_Chiappe |
| work_keys_str_mv |
AT chiappeg effectsofcorrelationsanddisorderonthepersistentcurrentinmesoscopicmetallicrings AT vergesja effectsofcorrelationsanddisorderonthepersistentcurrentinmesoscopicmetallicrings AT louise effectsofcorrelationsanddisorderonthepersistentcurrentinmesoscopicmetallicrings |
| _version_ |
1807324187801419776 |