Magnetization vector in the reversible region of a highly anisotropic cuprate superconductor: anisotropy factor and the role of 2D vortex fluctuations

Abstract

By using a high quality Tl2Ba2Ca2Cu3O10 (Tl-2223) single crystal as an example, the magnetization vector was probed in the reversible region of highly anisotropic cuprate superconductors. For that, we have measured its components along and transverse to the applied magnetic field for different crystal orientations. The analysis shows that the angular dependence of the perpendicular component of the magnetization vector follows the one predicted by a London-like approach which includes a contribution associated with the thermal fluctuations of the 2D vortex positions. For the Tl-2223 crystal studied here, a lower bound for the anisotropy factor was estimated to be about 190.

6 pages, 3 figures

References in corpus (3)

• Diamagnetism around the Meissner transition in a homogeneous cuprate single crystal
• Comment on ''Field-Enhanced Diamagnetism in the Pseudogap State of the Cuprate Bi2Sr2CaCu2O8+δSuperconductor in an Intense Magnetic Field''
• Structural and Tc inhomogeneities inherent to doping in La_{2-x}Sr_xCuO_4 superconductors and their effects on the precursor diamagnetism

Cited by in corpus (4)

• Vortex phases and glassy dynamics in the highly anisotropic superconductor HgBa${}_2$CuO${}_{4+\delta }$
• Magneto-elastic coupling model of deformable anisotropic superconductors
• Angular slippage from the crystallographic c-axis of the reversible magnetization vector in a tilted crystal of a highly anisotropic cuprate superconductor
• Angular dependence of the fluctuation magnetization vector above the superconducting transition of a highly anisotropic high-Tc cuprate