Critical dynamics of superconducting Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) single crystal

The magnetization and resistivity of Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) (Bi-2212) single crystals have been measured as a function of magnetic field H and temperature T. The extracted fluctuation part of the magnetization and conductivity exhibit critical behavior consistent with the three dimens...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1999-09, Vol.35 (5), p.4082-4084
Main Authors: Kim, Jin-Tae, Chung, S H, Ha, D H, Yoo, K-H, Park, Y K, Park, J-C, Kim, M-S, Lee, Sung-Ik
Format: Article
Language:English
Subjects:
BISMUTH OXIDE
COPPER OXIDE
Dynamics
ELECTRICAL CONDUCTIVITY
Electrical resistivity
Exponents
MAGNETIC FIELD
Magnetic fields
Magnetization
SINGLE CRYSTALS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
YBCO superconductors
YTTRIUM OXIDE
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Summary:The magnetization and resistivity of Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8) (Bi-2212) single crystals have been measured as a function of magnetic field H and temperature T. The extracted fluctuation part of the magnetization and conductivity exhibit critical behavior consistent with the three dimensional XY model. The dynamic critical exponent z is 1.6 plus or minus 0.1, which is close to the value for YBCO. The static critical exponent v is 0.769 and 0.909 respectively for the magnetization and conductivity data. The values of v are larger than that of YBCO. The results indicate that the weak interlayer coupling along the c-axis of Bi-2212 does not influence the dynamic critical exponent z but significantly increases the static critical exponent v.
ISSN:0018-9464
DOI:10.1109/20.800762