Physics – Condensed Matter – Superconductivity
Scientific paper
2007-06-15
Physical Review B 76, 224517 (2007)
Physics
Condensed Matter
Superconductivity
17 pages, 20 figures
Scientific paper
10.1103/PhysRevB.76.224517
We study the influence of dissipation on the switching current statistics of moderately damped Josephson junctions. Different types of both low- and high- $T_c$ junctions with controlled damping are studied. The damping parameter of the junctions is tuned in a wide range by changing temperature, magnetic field, gate voltage, introducing a ferromagnetic layer or in-situ capacitive shunting. A paradoxical collapse of switching current fluctuations occurs with increasing $T$ in all studied junctions. The phenomenon critically depends on dissipation in the junction and is explained by interplay of two counteracting consequences of thermal fluctuations, which on the one hand assist in premature switching into the resistive state and on the other hand help in retrapping back to the superconducting state. This is one of the rare examples of anticorrelation between temperature and fluctuation amplitude of a physically measurable quantity.
Bauch Th.
Delsing Per
Golod Taras
Krasnov Vladimir M.
No associations
LandOfFree
Anticorrelation between temperature and fluctuations in moderately damped 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 Anticorrelation between temperature and fluctuations in moderately damped Josephson junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anticorrelation between temperature and fluctuations in moderately damped Josephson junctions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-549448