Quantum Tunneling of Normal-Superconducting Interfaces in a Type-I Superconductor
Superconductivity
2011-03-15 v1 Mesoscale and Nanoscale Physics
Abstract
Evidence of a non-thermal magnetic relaxation in the intermediate state of a type-I superconducor is presented. It is attributed to quantum tunneling of interfaces separating normal and superconducting regions. Tunneling barriers are estimated and temperature of the crossover from thermal to quantum regime is obtained from Caldeira-Leggett theory. Comparison between theory and experiment points to tunneling of interface segments of size comparable to the coherence length, by steps of order one nanometer.
Keywords
Cite
@article{arxiv.1007.1184,
title = {Quantum Tunneling of Normal-Superconducting Interfaces in a Type-I Superconductor},
author = {E. M. Chudnovsky and S. Velez and A. Garcia-Santiago and J. M. Hernandez and J. Tejada},
journal= {arXiv preprint arXiv:1007.1184},
year = {2011}
}
Comments
4 pages, 5 figures