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Angular dependence of the fluctuation-induced magnetization of single-crystalline Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8] near [ital T][sub [ital c]]

Journal Article · · Physical Review, B: Condensed Matter; (United States)
;  [1];  [2];  [3]
  1. Division of Materials Sciences, Brookhaven National Laboratory, Upton, New York 11973 (United States)
  2. School of Physics, The University of New South Wales, P.O. Box 1, Kensington, NSW, Australia 2033 (Australia)
  3. Superconductivity Research Laboratory, ISTEC, 10-13, Shinonome I-chrome, Koto-ku, Tokyo 135 (Japan)
We report a detailed measurement of the magnetization for a high-quality Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8] single crystal as a function of magnetic field ([bold H]) and the angle between [bold H] and the [ital c]-axis, near the transition temperature [ital T][sub [ital c]]. The fluctuation magnetization for [bold H] parallel to the [ital c]-axis was found to be in excellent agreement with the recently developed vortex-fluctuation theory by Bulaevskii [ital et] [ital al]. and the order-parameter fluctuation theory by Te[hacek s]anovic [ital et] [ital al]. However, our fluctuation magnetization data for the fields, applied at a large angle with respect to the [ital c]-axis, were found inconsistent with the expectations from the above theories.
DOE Contract Number:
AC02-76CH00016
OSTI ID:
7103746
Journal Information:
Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:9; ISSN PRBMDO; ISSN 0163-1829
Country of Publication:
United States
Language:
English