两维超导体中集体绝缘态的实验证据
超导电性
2009-11-10 v2 无序系统与神经网络
摘要
我们 presented the results of an experimental study of the current-voltage characteristics in strong magnetic field () of disordered, superconducting, thin-films of amorphous Indium-Oxide. As the strength is increased superconductivity degrades, until a critical field () where the system is forced into an insulating state. We show that the differential conductance measured in the insulating phase vanishes abruptly below a well-defined temperature, resulting in a clear threshold for conduction. Our results indicate that a new collective state emerges in two-dimensional superconductors at high .
引用
@article{arxiv.cond-mat/0403480,
title = {Experimental evidence for a collective insulating state in two-dimensional superconductors},
author = {G. Sambandamurthy and L. W. Engel and A. Johansson and E. Peled and D. Shahar},
journal= {arXiv preprint arXiv:cond-mat/0403480},
year = {2009}
}
备注
TeX file and 4 figures; final accepted version