Interlayer phase correlation of the vortex system around the coupling transition in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub y} containing columnar defects

Journal Article · Sat May 01 00:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.59.11568· OSTI ID:337548

Tsuchiya, Y; Hanaguri, T; Yasuda, H ^[1]; Maeda, A ^[1]; Sasase, M; Hojou, K ^[2]; Steel, D G; Lee, J U ^[3]; Hofman, D J ^[4]

---

1. Department of Basic Science, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo 153-8902 (Japan)
2. Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195 (Japan)
3. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
4. Physics Division (ATLAS Accelerator), Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The Josephson plasma resonance and dc magnetization were investigated in a high-T{sub c} cuprate Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub y} (Bi-2212) containing columnar defects in order to clarify the detailed bahavior in the reversible region around the coupling transition of pancake vortices. We point out that the coupling transition line which separates decoupled and well-coupled pancake vortices is a temperature independent horizontal line on the H-T plane. This result indicates that the coupling transition is a field-induced phenomenon. We find that the rapid reduction of the interlayer phase correlation and the enhancement of the in-plane critical current density take place simultaneously at B=B{sup {asterisk}}, which is just below the coupling transition field B{sub cp}. This phenomenon may be interpreted as the field-induced acceleration of the decoupling of pancake vortices in the reversible region of Bi-2212 with columnar defects. B{sub cp} was rather smaller than B{sub {phi}}. From transmission electron microscopy, we infer that the inhomogeneous distribution of columnar defects may be related to the coupling transition field B{sub cp}{approximately}B{sub {phi}(eff)}, which was rather smaller than B{sub {phi}}. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 337548
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 59; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
COPPER OXIDES
CORRELATIONS
COUPLING
CRITICAL CURRENT
CRYSTAL DEFECTS
CUPRATES
CURRENT DENSITY
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
LAYERS
MAGNETIC FLUX
MAGNETIZATION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
VORTICES