Flux dynamics and vortex phase diagram in Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} thin films

Journal Article · Wed Dec 01 00:00:00 EST 1999 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1023/A:1022593700681· OSTI ID:20015328

Wen, H H

By doing sensitive magnetic measurement, the current-voltage (I-V or E-j) characteristics were determined for Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} thin films at temperatures between 4.2 K and 70 K in magnetic fields up to 6T. The authors found a crossover of the dimensionality of flux dynamics from 3D at low fields to 2D at high fields. The vortex matter melts at a finite temperature at a low field (3D) and at zero K at a high field (2D). Finally they attempt to give a vortex phase diagram based on this analysis.

• Research Organization: National Lab. for Superconductivity, Beijing (CN)
• OSTI ID: 20015328
• Journal Information: Journal of Low Temperature Physics, Vol. 117, Issue 5-6; Conference: International Conference on Physics and Chemistry of Molecular and Oxide Superconductors, Stockholm (SE), 07/28/1999--08/02/1999; Other Information: PBD: Dec 1999; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
MIXED STATE
MAGNETIC FLUX
THALLIUM OXIDES
BARIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
PHASE DIAGRAMS
SUPERCONDUCTIVITY