Pi-Josephson Junction and Spontaneous Superflow in Rings from Ultracold Fermionic Atomic Gases
| dc.creator | Kulic, Miodrag L. | |
| dc.date | 2006-05-24 | |
| dc.date | 2006-06-07 | |
| dc.date.accessioned | 2026-07-07T07:09:10Z | |
| dc.date.available | 2026-07-07T07:09:10Z | |
| dc.description | he BCS-like pairing in ultracold fermionic atomic ($UCFAG$) gases is studied in the model of "isotopic-spin" pairing proposed in 1991 \cite% {Ku-Hof-SSC}. This model assumes a mismatch ($δ$) in chemical potentials of pairing fermionic atoms. It is shown that a $π$-Josephson junction can be realized in $UCFAG$ systems, where the left and right banks $% S$ are the $UCFAG$ superfluids. The weak link $M$ consists from the normal $% UCFAG$ with the finite mismatch $δ$. If the $π$-junction is a part of a closed ring the superfluid mass-current flows spontaneously in the ring, i.e., the time-reversal symmetry is broken spontaneously. This is realized if the radius of the ring $R$ is larger than the critical one $% R_{c} $. All these effects exist also in the case when $δ\gg Δ$, where $Δ$ is the superfluid gap, but with the reduced thickness of the weak link. It is also discussed, that if junctions $SM_{1}M_{2}S$ and trilayers $% M_{1}SM_{2}$ from $UCFAG$ are realizable this renders a possibility for a novel electronics - \textit{hypertronics}. | |
| dc.description | 6 pages, 3 figures, Introduction and List of References updated | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0605604 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0605604 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/110962 | |
| dc.subject | Statistical Mechanics | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Pi-Josephson Junction and Spontaneous Superflow in Rings from Ultracold Fermionic Atomic Gases | |
| dc.type | text |