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 · Fri Sep 01 00:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.R7050· OSTI ID:115852

Bernhard, C; Wenger, C; Niedermayer, C ^[1]; Pooke, D M; Tallon, J L ^[2]; Kotaka, Y; Shimoyama, J; Kishio, K ^[3]; Noakes, D R; Stronach, C E; Sembiring, T ^[4]; Ansaldo, E J ^[5]

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1. Universitaet Konstanz, Fakultaet fuer Physik, D-78434 Konstanz (Germany)
2. New Zealand Institute for Industrial Research, P.O. Box 31310, Lower Hutt (New Zealand)
3. Department of Applied Chemistry, University of Tokyo, Tokyo 113 (Japan)
4. Virginia State University, Petersburg, Virginia 23806 (United States)
5. 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

Related Subjects

66 PHYSICS
ANISOTROPY
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MAGNETIC FLUX
MAGNETIZATION
MONOCRYSTALS
MUON SPIN RELAXATION
STRONTIUM OXIDES