Recoupling of Decoupled Vortex Liquid by Columnar Defects in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital y}}
- Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113 (Japan)
- 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
Similar Records
A Boomerang-Shaped Reduction in Interlayer Phase Coherence in Bi2Sr2CaCu208+y with Splayed Columnar Defects
Reentrant c-axis magnetoresistance in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} with columnar defects: Evidence for recoupling of the vortex liquid