Universal scaling of the order-parameter distribution in strongly disordered superconductors

G. Lemarié*, A. Kamlapure, D. Bucheli, L. Benfatto, J. Lorenzana, G. Seibold, S. C. Ganguli, P. Raychaudhuri, C. Castellani

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

41 Citations (Scopus)

Abstract

We investigate theoretically and experimentally the statistical properties of the inhomogeneous order-parameter distribution (OPD) at the verge of the superconductor-insulator transition (SIT). We find within two prototype fermionic and bosonic models for disordered superconductors that one can identify a universal rescaling of the OPD. By performing scanning-tunneling microscopy experiments in three samples of NbN with increasing disorder we show that such a rescaling also describes the experimental data with excellent accuracy. These results can provide a breakthrough in our understanding of the SIT.

Original languageEnglish
Article number184509
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number18
DOIs
Publication statusPublished - 22 May 2013
MoE publication typeA1 Journal article-refereed

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