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Hole-doped, high-temperature superconductors LixBC, NaxBC and Cx: a coherent-potential-based prediction

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Title Hole-doped, high-temperature superconductors LixBC, NaxBC and Cx: a coherent-potential-based prediction
 
Creator SINGH, PRABHAKAR P
 
Subject superconducting transition
boron compounds
band structure
hole density
 
Description Using density-functional-based methods, we show that the hole-doped LixBC and NaxBC in P63/mmc crystal structure and Cx in graphite structure are capable of showing superconductivity, possibly with a Tc much higher than that of MgB2. We use the pseudopotential method to obtain the optimized lattice constants a and c, the coherent-potential approximation to describe the effects of disorder, the Gaspari–Gyorffy formalism to obtain the electron–phonon coupling constant λ, and the Allen–Dynes equation to calculate Tc as a function of hole concentration in these alloys.
 
Publisher Elsevier
 
Date 2009-04-03T09:02:06Z
2011-11-25T20:27:29Z
2011-12-26T13:08:04Z
2011-12-27T05:56:05Z
2009-04-03T09:02:06Z
2011-11-25T20:27:29Z
2011-12-26T13:08:04Z
2011-12-27T05:56:05Z
2002
 
Type Article
 
Identifier Solid State Communications 124(1-2), 25-28
0038-1098
http://dx.doi.org/10.1016/S0038-1098(02)00454-4
http://hdl.handle.net/10054/1102
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1102
 
Language en