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Effect of Pseudogap on the Isotope Exponent of High-Tc Superconductors

✍ Scribed by P. Udomsamuthirun


Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
97 KB
Volume
226
Category
Article
ISSN
0370-1972

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✦ Synopsis


The purpose of this paper is to explain the unusual isotope coefficients of cuprates by considering the influence of a pseudogap and phononic and electronic interactions in weak-coupling limit. Exact analytic expressions of the isotope exponent (a) for the s-and d-wave pairing symmetry are derived. It is found that a can fit the experimental data well and that the presence of the pseudogap increases a in the low-T c region, but has no effect in the high-T c region.


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