|  |
| Titel:
|
Repulsive fluxons in a stack of Josephson junctions perturbed by a cavity |
| Type:
|
Journal articleJournal article |
| Person(er):
|
Forfatter:
Madsen, Søren
Technical University of Denmark
Technical University of Denmark
Email:
Technical University of Denmark
Email:
|
| Uddrag:
|
The BSCCO type intrinsic Josephson junction has been modeled as a stack of inductively coupled long Josephson junctions, which were described by a system of coupled sine-Gordon equations. In a system of 10 long Josephson junctions coupled to a linear cavity, we numerically investigate how the cavity perturbs fluxon motion in the junctions. Fluxons in neighboring junctions are repulsive leading to anti-phase motion. The cavity provides a force which perturbs this anti-phase motion, and may even force the fluxons to build a square lattice, i.e. to perform in-phase motion. For different values of the inductive coupling strength, we investigate the cavity current, fluxon phase difference, and current–voltage characteristic. The stack-cavity system with in-phase fluxon motion may be utilized as a THz oscillator. |
| Publiceret:
|
in journal: Physica C: Superconductivity And its Applications (ISSN: 0921-4534) (DOI: http://dx.doi.org/10.1016/j.physc.2007.11.029), vol: 468, issue: 7-10, pages: 649-653, 2008 |
| DOI:
|
|
|
|