Recoupling of Decoupled Vortex Liquid by Columnar Defects in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital y}}

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.3759· OSTI ID:554006

Sato, M; Shibauchi, T; Ooi, S; Tamegai, T ^[1]; Konczykowski, M ^[2]

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1. Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113 (Japan)
2. Laboratoire des Solides Irradies, CNRS URA-1380, Ecole Polytechnique, 91128 Palaiseau (France)

We report on the effect of columnar defects on the interlayer phase coherence in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+y} using Josephson plasma resonance as a probe. In the vortex liquid phase close to T{sub c}, the resonance field (H{sub p}) shows a characteristic exponential temperature dependence similar to that of the irreversibility line. A drastic increase in H{sub p} occurs at a frequency-dependent temperature in the vortex liquid phase. We interpret this change as a manifestation of field-induced recoupling of decoupled vortex liquid by columnar defects. The double resonance peaks observed in this temperature range indicate the coexistence of coupled and decoupled vortex regions. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 554006
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRYSTAL DEFECTS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
RADIATION EFFECTS
SOLID-STATE PLASMA
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
VORTICES