Phys. Rev. B 65, 212509 (2002) [4 pages]Universal behavior of the in-plane paraconductivity of cuprate superconductors in the short-wavelength fluctuation regimeReceived 13 August 2001; published 12 June 2002 The in-plane paraconductivity was measured in the so-called high reduced-temperature region [for ɛ≡ln(T/TC) well above 0.1] in high-quality single crystals or epitaxial thin films of highly anisotropic cuprate superconductors with different number of superconducting layers per periodicity length. Although the high-ɛ behavior of the paraconductivity cannot be described in terms of a critical exponent in ɛ, in all the cases we observe the same type of rapid fall-off at the same (well within the experimental uncertainties) reduced-temperature ɛC≃0.7. These results may be explained in terms of the multilayered Gaussian-Ginzburg-Landau approach by taking into account that due to the uncertainty principle also above TC the superconducting coherence length cannot be appreciably smaller than at T=0 K. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.65.212509
DOI:
10.1103/PhysRevB.65.212509
PACS:
74.20.De, 74.25.Fy, 74.40.+k, 74.72.-h
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.