Intermittent Josephson effect with feedback voltage and temperature oscillations in graphite-coated nanocapsules with superconducting TaC core
Superconductivity
2012-01-20 v4
Abstract
An intermittent Josephson effect in the form of voltage and temperature oscillations in the voltage - current curves near 2 K is observed in pellets consisting of superconducting TaC nanocapsules coated with graphite. This phenomenon is attributed to non-equilibrium conditions, when Cooper pairs across a junction, which stimulate the emission of photons and the feedback temperature change of the junction. It occurs in a three-dimensional granular framework composed of TaC/carbon/TaC tunneling junctions with a Mott metal-insulator transition, below the critical temperature Tc of non-ideal type-II superconductor TaC.
Keywords
Cite
@article{arxiv.1109.4097,
title = {Intermittent Josephson effect with feedback voltage and temperature oscillations in graphite-coated nanocapsules with superconducting TaC core},
author = {Dianyu Geng and Zhenhua Wang and Da Li and Zhidong Zhang and Xiaolin Wang},
journal= {arXiv preprint arXiv:1109.4097},
year = {2012}
}
Comments
5 pages, 6 figures