Enhancement of Persistent Current on Multichannel Ring
| dc.creator | Kusmartsev, F. V. | |
| dc.date | 1996-06-01 | |
| dc.date.accessioned | 2026-07-07T03:08:35Z | |
| dc.date.available | 2026-07-07T03:08:35Z | |
| dc.description | We describe a "train" effect which may exist in small metallic and semiconductor rings and might be associated with the long-standing problem of the persistent current enhancement. The current is associated with the cooperative motion of N electrons constituing the N-electron "train". The train arises via an excitation or a backflow of spin waves or of interchannel charge density sound modes. The impurities and defects have a little effect on the "train" current. The reason is that the "train" current is associated with a small momentum transfer, which is much smaller than the momentum transfer of the free electron current equal to 2 pi/L. For an illustration of the "train" effect we have calculated the persistent current in the framework of the Bethe ansatz solutions for Hubbard model. The fractional M/N periodicities of the persistent current serve as an indication of the electron "train" | |
| dc.description | submitted to PRL | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9605202 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9605202 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27554 | |
| dc.subject | Condensed Matter | |
| dc.title | Enhancement of Persistent Current on Multichannel Ring | |
| dc.type | text |