Journal
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Volume 435, Issue 1-2, Pages 71-73Publisher
ELSEVIER
DOI: 10.1016/j.physc.2006.01.020
Keywords
two-band superconductivity; MgB2; II-type superconductors
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Magnetic field effect on the point-contact spectra of the Al- and C-substituted MgB2 is presented. It is shown that suppression of the pi-band contribution to the spectrum is different in the aluminium- and carbon-doped samples. The carbon substitution leads to a stronger enhancement of the pi-band scattering while the Al-doping does not change the ratio between the pi and sigma scatterings. (c) 2006 Elsevier B.V. All rights reserved.
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