24 research outputs found
The intrinsic crossing point of the magnetization
The crossing point of the magnetization vs. temperature
curves that appears below Tc in highly anisotropic superconducting
cuprates was measured in different compounds, with a different number, N, of
superconducting layers per periodicity length, s, and also with
different values of s. By correcting the measurements from different
extrinsic inhomogeneity effects through the Meissner fraction, it is
demonstrated experimentally for the first time that in the high-magnetic-field
limit the intrinsic crossing point may be explained at a quantitative level in
terms of the Tesanović and coworkers approach based on thermal fluctuations of quasi-2D
vortices (pancakes), with an effective periodicity length equal to s,
independently of N