Physics – Condensed Matter – Superconductivity
Scientific paper
2011-05-12
J. Phys.: Conf. Ser. 286 012056 (2011)
Physics
Condensed Matter
Superconductivity
7 pages, 4 figures, presentation given at CMMP 2010
Scientific paper
10.1088/1742-6596/286/1/012056
Simple causal arguments put forward by Kibble and Zurek suggest that the scaling behaviour of condensed matter at continuous transitions is related to the familiar universality classes of the systems at quasi-equilibrium. Although proposed 25 years ago or more, it is only in the last few years that it has been possible to devise experiments from which scaling exponents can be determined and in which this scenario can be tested. In previous work, an unusually high Kibble-Zurek scaling exponent was reported for spontaneous fluxoid production in a single isolated superconducting Nb loop, albeit with low density. Using analytic approximations backed up by Langevin simulations, we argue that densities as small as these are too low to be attributable to scaling, and are conditioned by the small size of the loop. We also reflect on the physical differences between slow quenches and small rings, and derive some criteria for these differences, noting that recent work on slow quenches does not adequately explain the anomalous behaviour seen here.
Rivers Ray J.
Weir David J.
No associations
LandOfFree
Fluxoid formation: size effects and non-equilibrium universality 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 Fluxoid formation: size effects and non-equilibrium universality, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluxoid formation: size effects and non-equilibrium universality will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-496456