title: Diamagnetism of real-space pairs above T(c) in hole doped cuprates.
abstract: The nonlinear normal state diamagnetism reported by Li et al (2010 Phys. Rev. B 81 054510) is shown to be incompatible with a claimed Cooper pairing and vortex liquid above the resistive critical temperature. However, it is perfectly compatible with the normal state Landau diamagnetism of real-space composed bosons, which provides a description of the nonlinear magnetization curves of the less anisotropic cuprates La-Sr-Cu-O (LSCO) and Y-Ba-Cu-O (YBCO) as well as for strongly anisotropic bismuth-based cuprates over the whole range of available magnetic fields.
authors.affiliation: Department of Physics, Loughborough University, Loughborough, UK.
authors.forename: A S
authors.initials: AS
authors.lastname: Alexandrov