Angular dependence of the fluctuation magnetization vector above the superconducting transition of a highly anisotropic high-Tc cuprate

Abstract

In highly anisotropic cuprate superconductors it is generally accepted that the reversible magnetization vector, M, is essentially perpendicular to the superconducting CuO2 layers in a wide range of crystal orientations with respect to the applied magnetic field, H. In a recent work [J. Mosqueira et al., Phys. Rev. B 84, 134504 (2011)] it is shown, however, that the dependence of M on the H orientation in the reversible mixed state of a high-quality Tl-based cuprate presents a notable deviation from this behavior. Here we extend these measurements to the fluctuation region above Tc, in order to check whether the above mentioned effect is also present.

References in corpus (3)

• On the consequences of the uncertainty principle on the superconducting fluctuations well inside the normal state
• Diamagnetism around the Meissner transition in a homogeneous cuprate single crystal
• Magnetization vector in the reversible region of a highly anisotropic cuprate superconductor: anisotropy factor and the role of 2D vortex fluctuations