PMID: 11909494Mar 23, 2002Paper

Evidence for two-band superconductivity from break-junction tunneling on MgB2

Physical Review Letters
H SchmidtD G Hinks

Abstract

Superconductor-insulator-superconductor tunnel junctions have been fabricated on MgB2 that display Josephson and quasiparticle currents. These junctions exhibit a gap magnitude, Delta approximately 2.5 meV, that is considerably smaller than the BCS value, but which clearly and reproducibly closes near the bulk T(c). In conjunction with fits of the conductance spectra, these results are interpreted as direct evidence of two-band superconductivity.

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Citations

Jun 13, 2003·Micron : the International Research and Review Journal for Microscopy·D EyidiA Saccone
Mar 6, 2003·Nature Materials·Xianghui ZengZi-Kui Liu
Jun 20, 2007·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Min-Seok ParkSung-Ik Lee
Oct 26, 2002·Physical Review Letters·M R EskildsenØ Fischer
Jun 6, 2003·Physical Review Letters·Yu G NaidyukS Tajima
Oct 4, 2003·Physical Review Letters·S TsudaS Shin
Jun 6, 2003·Physical Review Letters·A E Koshelev, A A Golubov
Feb 9, 2005·Physical Review Letters·A FlorisS Massidda
Oct 26, 2002·Physical Review Letters·M IavaroneS I Lee
Nov 13, 2008·Physical Review Letters·I GuillamónP Rodière
Feb 7, 2003·Physical Review Letters·A Gurevich, V M Vinokur
Apr 22, 2010·ACS Nano·Gavin D ScottDouglas Natelson

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