Journal article
Effect of defects on the critical points in YBa sub(2)Cu sub(3)O sub(7- delta )
Physica. C, Superconductivity, Vol.341-348 (II), pp.953-956
01 Jan 2000
Abstract
The upper and lower critical points are investigated in untwinned YBa sub(2)Cu sub(3)O sub(7- delta ) single crystals with dilute columnar defects. Dilute columnar defects raise the upper critical point, indicating that the transition near the upper critical point is a vortex entanglement transition. The lower critical point is very sensitive to columnar defect disorder and its position can be described by a Lindemann-like criterion similar to that for melting. Dilute columnar defects induce non-linear behavior in the I-V curves of the vortex liquid state above the lower critical point, which we interpret as a vestige of the critical region associated with the Bose glass transition below the lower critical point.
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Details
- Title
- Effect of defects on the critical points in YBa sub(2)Cu sub(3)O sub(7- delta )
- Creators
- W KwokRobert OlssonGoran KarapetrovLisa PauliusWilliam MoultonDavid HofmanGeorge Crabtree
- Publication Details
- Physica. C, Superconductivity, Vol.341-348 (II), pp.953-956
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Identifiers
- 991019295196104721