Anisotropy and dimensional crossover of the vortex state in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} crystals
Journal Article
·
· Physical Review, B: Condensed Matter
- Universitaet Konstanz, Fakultaet fuer Physik, D-78434 Konstanz (Germany)
- New Zealand Institute for Industrial Research, P.O. Box 31310, Lower Hutt (New Zealand)
- Department of Applied Chemistry, University of Tokyo, Tokyo 113 (Japan)
- Virginia State University, Petersburg, Virginia 23806 (United States)
- University of Saskatchewan, Saskatoon, Saskatchewan, S7N 0W0 (Canada)
We report muon-spin-rotation studies of the magnetic-field distribution {ital n}({ital B}) in the vortex state in both underdoped and strongly overdoped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} single crystals. With increasing magnetic field we observe sudden changes in {ital n}({ital B}) that are indicative of a reduction in the dimensionality of the vortex system. The crossover field {ital B}{sup *} depends strongly on the doping state and the corresponding anisotropy {gamma} of the system. From magnetization measurements we find evidence that the second peak in the {ital M}-{ital H} loops is related to the crossover in the vortex structure in {ital B}{sup *}.
- OSTI ID:
- 115852
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 10 Vol. 52; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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