Anomalous vortex dynamics in 2D superconductors
| dc.creator | Capezzali, Massimiliano | |
| dc.creator | Beck, Hans | |
| dc.creator | Shenoy, Subodh R. | |
| dc.date | 1996-12-03 | |
| dc.date.accessioned | 2026-07-07T09:11:21Z | |
| dc.date.available | 2026-07-07T09:11:21Z | |
| dc.description | Low -frequency dynamic impedance ($σ^{-1}(ω,T)\equiv(σ_{1}+iσ_{2})^{-1}$) measurements on Josephson junction arrays with finite vortex screening length $ξ$, found that $σ_{1}\sim |\logω|$, $σ_{2}\sim$ constant. This implies anomalously sluggish vortex mobilities $μ_{V}(ω)\simσ_{1}^{-1}$, and is in conflict with general dynamical scaling expressions that yield, for low-$ω$, $σ_{1}\rightarrowξ^{2}$ and $σ_{2}\rightarrow 0$. We calculate : a) $σ(ω,T)$ by real-space vortex scaling; b) $μ_{V}(ω)$ using Mori's formalism for a screened Coulomb gas. We find, in addition to the usual critical (large-$ω$) and hydrodynamic (low-$ω$) regimes, a new intermediate-frequency scaling regime into which the experimental data fall. This resolves the above mentioned conflict and makes explicit predictions for the scaling form of $σ(ω,T)$, testable in SNS and SIS arrays. | |
| dc.description | 4 pages, revtex, 2 postscript figures, accepted for publication in Physical Review Letters | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9612032 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9612032 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/151647 | |
| dc.subject | Superconductivity | |
| dc.title | Anomalous vortex dynamics in 2D superconductors | |
| dc.type | text |