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Augmented space recursion study of the effect of disorder on superconductivity

DSpace at IIT Bombay

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Title Augmented space recursion study of the effect of disorder on superconductivity
 
Creator GANGULY, S
VENKATASUBRAMANIAN, A
TARAFDER, K
DASGUPTA, I
MOOKERJEE, A
 
Subject coherent-potential approximation
s-wave superconductors
electronic-structure
systems
anderson model
dirty superconductors
d-wave superconductivity
fluctuations in superconductors
hubbard model
recursion method
 
Description We present a real-space approach to study the effect of disorder on superconductivity. The method is based on augmented space formalism that goes beyond mean-field approximations for configuration averaging and effectively deals with the influence of configuration fluctuations of the neighborhood of an atom. In the regime of validity of Anderson's theorem our results for s- and d-wave dirty superconductors have excellent agreement with existing results. The formalism is extended and tested for random negative U Hubbard model. Having verified the reliability of our method we use it to study environment-dependent inhomogeneous randomness in disordered superconducting systems.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T19:50:54Z
2011-12-26T12:49:56Z
2011-12-27T05:35:46Z
2011-07-16T19:50:54Z
2011-12-26T12:49:56Z
2011-12-27T05:35:46Z
2009
 
Type Article
 
Identifier PHYSICAL REVIEW B, 79(22), -
1098-0121
http://dx.doi.org/10.1103/PhysRevB.79.224204
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4515
http://hdl.handle.net/10054/4515
 
Language en