Persistent Currents in Interacting Systems: Role of the Spin
| dc.creator | Bouzerar, Georges | |
| dc.creator | Poilblanc, Didier | |
| dc.date | 1995-12-22 | |
| dc.date.accessioned | 2026-07-07T03:08:07Z | |
| dc.date.available | 2026-07-07T03:08:07Z | |
| dc.description | Persistent currents flowing through disordered mesoscopic rings threaded by a magnetic flux are investigated. Models of fermions with on-site interactions (Hubbard model) or models of spinless fermions with nearest neighbor interactions are considered on 2D cylinders with twisted boundary conditions in one direction to account for a magnetic flux. Self-consistent Hartree-Fock methods are used to treat the electron-electron interaction beyond first order. We show that the second harmonic of the current (which is relevant in the diffusive regime) is {\it strongly suppressed} by the interaction in the case of spinless fermions while it is {\it significantly enhanced} in the Hubbard model. Our data also strongly suggest that the reduction (increase) of this harmonic is related to a strong increase (reduction) of the spacial fluctuations of the charge density. | |
| dc.description | Latex file (5 pages), 7 postscript figures in uuencoded format included | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9512153 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9512153 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27431 | |
| dc.subject | Condensed Matter | |
| dc.title | Persistent Currents in Interacting Systems: Role of the Spin | |
| dc.type | text |