Thickness-tuned Superconductor-to-Insulator Transitions under magnetic field in a-NbSi
Superconductivity
2009-11-13 v1 Disordered Systems and Neural Networks
Abstract
We have studied the thickness-induced superconductor-to-insulator transition in the presence of a magnetic field for a-NbSi thin films. Analyzing the critical behavior of this system within the "dirty boson model", we have found a critical exponents product of > 0.4. The corresponding phase diagram in the (H,d) plane is inferred. This small exponent product as well as the non-universal value of the critical resistance found at the transition call for further investigations in order to thoroughly understand these transitions.
Keywords
Cite
@article{arxiv.0810.2321,
title = {Thickness-tuned Superconductor-to-Insulator Transitions under magnetic field in a-NbSi},
author = {C. A. Marrache-Kikuchi and H. Aubin and A. Pourret and K. Behnia and J. Lesueur and L. Berge and L. Dumoulin},
journal= {arXiv preprint arXiv:0810.2321},
year = {2009}
}
Comments
7 pages, 7 figures, to be published in PRB