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arXiv · 1005.4944

Diamagnetism of real-space pairs above Tc in hole doped cuprates

A. S. Alexandrov
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Abstract

The nonlinear normal state diamagnetism reported by Lu Li et al. [Phys. Rev. B 81, 054510 (2010)] is shown to be incompatible with an acclaimed Cooper pairing and vortex liquid above the resistive critical temperature. Instead it is perfectly compatible with the normal state Landau diamagnetism of real-space composed bosons, which describes the nonlinear magnetization curves in less anisotropic cuprates La-Sr-Cu-O (LSCO) and Y-Ba-Cu-O (YBCO) as well as in strongly anisotropic bismuth-based cuprates in the whole range of available magnetic fields.

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A. S. Alexandrov. 2010-05-26. Diamagnetism of real-space pairs above Tc in hole doped cuprates. https://doi.org/10.1088/0953-8984%2F22%2F42%2F426004

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