Superconducting fluctuations and anomalous phonon renormalization much above superconducting transition temperature in Ca4Al2O5.7Fe2As2

Critical Fluctuations in Normal-to-superconducting Transition

Critical Fluctuations in Normal-to-superconducting Transition

Field Electron Emission Spectroscopy of YBa2Cu3O6.9 Single Crystals Above and Below Superconducting Transition Temperature

An experimental investigation has been made of the total energy distribution of electrons emitted from the surfaces, purified by field evaporation, of YBqCu,O,,, single crystals oriented in the [loo] direction at temperatures above and below superconducting transition temperature. Field electron emission spectroscopic experiments carried out at 75 K visualized the superconducting energy gap at ...

Superconducting Tes Bolometers above 1k

The discovery of High Tc superconductivity led to the exploration of current-biased superconducting bolometers cooled with liquid nitrogen and optimized to view 300K backgrounds at wavelengths beyond 10 μm. If such detectors reach the thermal fluctuation noise limit they would be a great improvement over room temperature pyroelectric detectors and thermopiles for many applications. The supercon...

Effect of pair breaking on mesoscopic persistent currents well above the superconducting transition temperature.

We consider the mesoscopic normal persistent current (PC) in a very low-temperature superconductor with a bare transition temperature T_0(c) much smaller than the Thouless energy E(c). We show that in a rather broad range of pair-breaking strength, T_0(c) < or = Planck's/tau(s)< or =E(c), the transition temperature is renormalized to zero, but the PC is hardly affected. This may provide an expl...