Physics – Condensed Matter – Superconductivity
Scientific paper
2008-07-17
Physics
Condensed Matter
Superconductivity
Scientific paper
We study the phenomenon of macroscopic quantum tunneling (MQT) in a finite size Josephson junction (JJ) with an externally applied magnetic field. As it is well known, the problem of MQT in a point-like JJ is reduced to the study of the under-barrier motion of a quantum particle in the washboard potential. In the case of a finite size JJ placed in magnetic field, this problem is considerably more complex since, besides the phase, the potential itself, depends on space variables. We find the general expressions both for the crossover temperature $T_{0}$ between thermally activated and macroscopic quantum tunneling regimes and the escape time $\tau_{\mathrm{esc}}$. It turns out that in proximity of particular values of magnetic field the crossover temperature can vary non-monotonically.
Barone Antonio
Ovchinnikov Yu N.
Varlamov Andrei A.
No associations
LandOfFree
The effect of Magnetic Field on MQT Escape Time in "Small" Josephson Junctions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The effect of Magnetic Field on MQT Escape Time in "Small" Josephson Junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The effect of Magnetic Field on MQT Escape Time in "Small" Josephson Junctions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-42559