Normal-state diamagnetism of charged bosons in cuprate superconductors.
Normal-state orbital diamagnetism of charged bosons quantitatively accounts for recent high-resolution magnetometery results near and above the resistive critical temperature T(c) of superconducting cuprates. The parameter-free descriptions of normal-state diamagnetism, T(c), upper critical fields, and specific heat anomalies support the 3D Bose-Einstein condensation of preformed real-space pairs with a zero off-diagonal order parameter above T(c) at variance with phase fluctuation scenarios of cuprates.
Alexandrov
A S
AS
Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom.