Comment on High-field studies of superconducting fluctuations in high-T-c cuprates: Evidence for a small gap distinct from the large pseudogap

Editorial Material

关键词: INPLANE PARACONDUCTIVITY;    INDUCED DIAMAGNETISM;    CONDUCTIVITY;    TEMPERATURE;    WELL;    BEHAVIOR;   

DOI  :  10.1103/PhysRevB.85.106501

来源: SCIE

【 摘 要 】

By using high magnetic field data to estimate the background conductivity, Rullier-Albenque and coworkers have recently published [Phys. Rev. B 84, 014522 (2011)] experimental evidence that the in-plane paraconductivity in cuprates is almost independent of doping. In this Comment we also show that, in contrast with their claims, these useful data may be explained at a quantitative level in terms of the Gaussian-Ginzburg-Landau approach for layered superconductors, extended by Carballeira and coworkers to high reduced temperatures by introducing a total-energy cutoff [Phys. Rev. B 63, 144515 (2001)]. When combined, these two conclusions further suggest that the paraconductivity in cuprates is conventional, i.e., associated with fluctuating superconducting pairs above the mean-field critical temperature.

【 授权许可】

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