Direct observation of intrinsic pinning by layered structure in single-crystal YBa2Cu3O7-δ
Abstract
The intrinsic pinning in twinned and untwinned single-crystal YBa2Cu3O7-δ is observed using a novel crossed-magnetic-field technique for obtaining angular resolutions of Δθ<0.005°. The pinning occurs for magnetic-field directions within a critical angle θ*<1° of the Cu-O planes. The data are discussed in the context of a lock-in transition of vortices in the a-b plane of the crystal.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 1991
- DOI:
- Bibcode:
- 1991PhRvL..67..390K
- Keywords:
-
- High Temperature Superconductors;
- Mixed Oxides;
- Pinning;
- Single Crystals;
- Barium Oxides;
- Copper Oxides;
- Phase Diagrams;
- Transition Temperature;
- Yttrium Oxides;
- Solid-State Physics;
- 74.70.Jm;
- 74.60.Ge