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Augmented space rec...
Augmented space recursion study of the effect of disorder on superconductivity
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Ganguly, Shreemoyee (author)
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Venkatasubramanian, A. (author)
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- Tarafder, Kartick (author)
- Uppsala universitet,Materialteori
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Dasgupta, Indra (author)
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Mookerjee, Abhijit (author)
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 79:22
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Anderson model
- dirty superconductors
- d-wave superconductivity
- fluctuations in superconductors
- Hubbard model
- recursion method
Publication and Content Type
- ref (subject category)
- art (subject category)
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