Conductivity fluctuation in HBCCO superconductor

We have analyzed the measured excess conductivity of a HBCCO high- T c superconductor as a function of temperature, which is attributed to the fluctuation of superconducting order parameter above T c0 . This excess conductivity is consistent with the two dimensional Aslamazov-Larkin mean-field theor...

Full description

Saved in:
Bibliographic Details
Published in:Solid state communications 1994, Vol.90 (9), p.603-606
Main Authors: Mun, Mi-Ock, Lee, Sergey, Bae, Myoung-Kwang, Lee, Sung-Ik
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.)
Physics
Superconductivity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have analyzed the measured excess conductivity of a HBCCO high- T c superconductor as a function of temperature, which is attributed to the fluctuation of superconducting order parameter above T c0 . This excess conductivity is consistent with the two dimensional Aslamazov-Larkin mean-field theory based on the Ginzburg-Landau theory. Applying the Lawrence-Doniach theory, we found that the interlayer coupling stregth is very small, and that a 2D to 3D crossover is not found down to ( T- T c0 )/ T c0 = 0.015. This two-dimensional fluctuation seems to be intrinsic to this highly anisotropic layered superconductor.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(94)90130-9