Ac-induced thermal vortex escape in magnetic-field-embedded long annular Josephson junctions
| dc.creator | Gronbech-Jensen, Niels | |
| dc.creator | Cirillo, Matteo | |
| dc.date | 2004-04-29 | |
| dc.date.accessioned | 2026-07-25T15:34:41Z | |
| dc.description | We investigate theoretically the thermal escape behavior of trapped magnetic fluxons in long annular Josephson junctions in dc magnetic fields, and perturbed by a probing ac current. The study is motivated by recently published experimental data that show multi-peaked escape distributions for increasing bias current in the extreme low temperature regime when the system is perturbed by an ac current. We demonstrate that the observed behavior of multi-peaked escape distributions can be reproduced and predicted in the entirely classical, thermally driven sine-Gordon model, which is widely accepted as accurately describing the experimental system. We interpret the observed multi-peaked distributions as being directly induced by dynamical resonances between the applied ac perturbation and the natural oscillation frequency of a trapped fluxon. | |
| dc.description | 12 pages + 8 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0404721 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0404721 | |
| dc.identifier | Physical Review B Vol.70, 214507 (2004) | |
| dc.identifier | doi:10.1103/PhysRevB.70.214507 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/35063 | |
| dc.subject | Superconductivity | |
| dc.subject | Statistical Mechanics | |
| dc.title | Ac-induced thermal vortex escape in magnetic-field-embedded long annular Josephson junctions | |
| dc.type | text |