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Is Δπ-gap-only superconductivity possible in Mg1−xAlxB2 and Mg(B1−yCy)2 alloys?

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Title Is Δπ-gap-only superconductivity possible in Mg1−xAlxB2 and Mg(B1−yCy)2 alloys?
 
Creator JIJI THOMAS JOSEPH, P
SINGH, PRABHAKAR P
 
Subject approximation theory
concentration (process)
density functional theory
superconductivity
 
Description Using density-functional-based method, we study the k-resolved σ- and π-band holes in Mg1−xAlxB2 and Mg(B1−yCy)2 alloys. We find that the calculated profiles of the loss of σ- and π-band holes in these two systems as a function of impurity concentration are in qualitative agreement with experiments, as expected. We also describe its implications vis-a-vis superconductivity in Mg1−xAlxB2 and Mg(B1−yCy)2. Based on our results, a Δπ-gap-only superconductivity seems unlikely in Mg1−xAlxB2 alloys.
 
Publisher Elsevier
 
Date 2009-04-03T09:02:50Z
2011-11-25T20:30:30Z
2011-12-26T13:08:17Z
2011-12-27T05:56:17Z
2009-04-03T09:02:50Z
2011-11-25T20:30:30Z
2011-12-26T13:08:17Z
2011-12-27T05:56:17Z
2007
 
Type Article
 
Identifier Physica C: Superconductivity 454(1-2), 43-47
0921-4534
http://dx.doi.org/10.1016/j.physc.2007.01.006
http://hdl.handle.net/10054/1108
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1108
 
Language en