Fluctuation induced diamagnetism in the zero magnetic field limit in a low temperature superconducting alloy.

Abstract

By using a Pb-18 at. % In alloy, the fluctuation induced diamagnetism was measured in the zero magnetic field limit, never observed until now in a low-T(C) superconductor. This allows us to disentangle the dynamic and the nonlocal electrodynamic effects from the short-wavelength fluctuation effects. The latter may be explained on the grounds of the Gaussian-Ginzburg-Landau approach by introducing a total energy cutoff in the fluctuation spectrum, which strongly suggests the existence of a well-defined temperature in the normal state above which all fluctuating modes vanish. This conclusion may also have implications when describing the superconducting state formation of the high-T(C) cuprates.

Cite this paper

@article{Mosqueira2001FluctuationID, title={Fluctuation induced diamagnetism in the zero magnetic field limit in a low temperature superconducting alloy.}, author={Jes{\'u}s Mosqueira and Carlos Carballeira and F. A. Suzuki Vidal}, journal={Physical review letters}, year={2001}, volume={87 16}, pages={167009} }