Vortex Phase Diagram of Layered Superconductor Cu0.03TaS2 for H || c

Details Vortex Phase Diagram of Layered Superconductor Cu0.03TaS2 for H || c Vortex Phase Diagram of Layered Superconductor Cu0.03TaS2 for H || c

2010-09-28

arxiv.org/abs/1009.5449v2

J. Phys.: Condens. Matter 22 (2010) 505704

Physics

Condensed Matter

Superconductivity

28 pages, 9 figures

Scientific paper

10.1088/0953-8984/22/50/505704

The magnetization and anisotropic electrical transport properties have been measured in high quality Cu0.03TaS2 single crystal. A pronounced peak effect has been observed, indicating that the high quality and homogeneity are vital to peak effect. A kink has been observed in the magnetic field H dependence of the in-plane resistivity {\rho}ab for H || c, which corresponds to a transition from activated to diffusive behavior of vortex liquid phase. In the diffusive regime of the vortex liquid phase, the in-plane resistivity {\rho}ab shows {\rho}ab $\propto$ H0.3 relation, which does not follow the Bardeen-Stephen law for free flux flow. Finally, a simplified vortex phase diagram of Cu0.03TaS2 for H || c is given.

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