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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1996
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03650375_v84_n3_p227_Chiappe http://hdl.handle.net/20.500.12110/paper_03650375_v84_n3_p227_Chiappe |
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paper:paper_03650375_v84_n3_p227_Chiappe |
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paper:paper_03650375_v84_n3_p227_Chiappe2023-06-08T15:35:43Z 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 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. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03650375_v84_n3_p227_Chiappe 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 |
| collection |
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. |
| title |
Effects of correlations and disorder on the persistent current in mesoscopic metallic rings |
| spellingShingle |
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 |
| publishDate |
1996 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03650375_v84_n3_p227_Chiappe http://hdl.handle.net/20.500.12110/paper_03650375_v84_n3_p227_Chiappe |
| _version_ |
1768541754727858176 |