Semifluxon molecule under control
| dc.creator | Dewes, Andreas | |
| dc.creator | Gaber, Tobias | |
| dc.creator | Koelle, Dieter | |
| dc.creator | Kleiner, Reinhold | |
| dc.creator | Goldobin, Edward | |
| dc.date | 2008-09-08 | |
| dc.date.accessioned | 2026-07-07T12:10:38Z | |
| dc.date.available | 2026-07-07T12:10:38Z | |
| dc.description | Josephson junctions with a phase drop pi in the ground state allow to create vortices of supercurrent carrying only half of the magnetic flux quantum Phi_0~2.07*10^-15 Wb. Such semifluxons have two-fold degenerate ground states denoted up (with flux +Phi_0/2 and supercurrent circulating clockwise) and down (with flux -Phi_0/2 and supercurrent circulating counterclockwise). We investigate a molecule consisting of two coupled semifluxons in a 0-pi-0 long Josephson junction. The fluxes (polarities) of semifluxons are measured by two on-chip SQUIDs. By varying the dc bias current applied to the 0-pi-0 junction, we demonstrate controllable manipulation and switching between two states, up-down and down-up, of a semifluxon molecule. These results provide a major step towards employing semifluxons as bits or qubits for classical and quantum digital electronics. | |
| dc.identifier | https://arxiv.org/abs/0809.1346 | |
| dc.identifier | http://arxiv.org/abs/0809.1346 | |
| dc.identifier | Phys. Rev. Lett. 101, 247001 (2008) | |
| dc.identifier | doi:10.1103/PhysRevLett.101.247001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/209990 | |
| dc.subject | Superconductivity | |
| dc.title | Semifluxon molecule under control | |
| dc.type | text |