The effect of correlated and point defects on the vortex lattice melting transition in single crystal YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}
Conference
·
OSTI ID:10185369
- Argonne National Lab., IL (United States)
- Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Physics and Astronomy; Illinois Univ., Urbana, IL (United States)
The vortex melting transition T{sub m} in several untwinned and twinned crystals measured resistively in fields up to 8 Tesla. A Lindemann criterion for vortex lattice melting is obtained in addition to a sharp hysteresis in the magnetoresistance at B{sub m} supporting a first order phase transition. The anisotropy of twin boundary pinning and its reduction of the ``kink`` in {rho}(T) associated with the first order melting transition is discussed in samples with very dilute twin boundaries. We also report on direct suppression of melting transition by intrinsic pinning for H {parallel} ab and by electron-irradiation-induced point defects.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10185369
- Report Number(s):
- ANL/MSD/CP-80634; CONF-930801-12; ON: DE93040277; CNN: Contract DMR91-20000; TRN: 93:022858
- Resource Relation:
- Conference: Conference of the International Union of Pure and Applied Physics on low temperature physics (LT 20),Eugene, OR (United States),1-11 Aug 1993; Other Information: PBD: Aug 1993
- Country of Publication:
- United States
- Language:
- English
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