Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings
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...
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1996
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00381098_v99_n10_p717_Chiappe http://hdl.handle.net/20.500.12110/paper_00381098_v99_n10_p717_Chiappe |
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paper:paper_00381098_v99_n10_p717_Chiappe2023-06-08T15:03:03Z Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings 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 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. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00381098_v99_n10_p717_Chiappe http://hdl.handle.net/20.500.12110/paper_00381098_v99_n10_p717_Chiappe |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings |
| topic_facet |
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 |
| description |
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. |
| title |
Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings |
| title_short |
Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings |
| title_full |
Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings |
| title_fullStr |
Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings |
| title_full_unstemmed |
Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings |
| title_sort |
recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings |
| publishDate |
1996 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00381098_v99_n10_p717_Chiappe http://hdl.handle.net/20.500.12110/paper_00381098_v99_n10_p717_Chiappe |
| _version_ |
1768544948500561920 |