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arXiv · 1009.5449

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

X. D. Zhu·J. C. Lu·Y. P. Sun·L. Pi·Z. Qu·L. S. Ling·Z. R. Yang·Y. H. Zhang
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Abstract

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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X. D. Zhu, J. C. Lu, Y. P. Sun, L. Pi, Z. Qu, L. S. Ling, Z. R. Yang, Y. H. Zhang. 2010-09-28. Vortex Phase Diagram of Layered Superconductor Cu0.03TaS2 for H || c. https://doi.org/10.1088/0953-8984/22/50/505704

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