0000000001134263

AUTHOR

I. Ciccarello

showing 2 related works from this author

Complex conductivity in high-Tc single crystal superconductors

1994

The electromagnetic surface impedance of single crystal high-T c superconductors has been examined within the framework of the two-fluid model and the hypothesis that the em field modulates the partial concentrations of both normal and condensate fluids. A comparison with experimental data is reported

SuperconductivityElectromagnetic fieldHigh-temperature superconductivityMaterials scienceCondensed matter physicsGeneral Physics and AstronomyConductivityTwo-fluid modellaw.inventionPhysics::Fluid DynamicsSurface conductivitylawElectrical resistivity and conductivityCondensed Matter::SuperconductivitySingle crystalAnnalen der Physik
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Time evolution of the microwave second-order response of YBaCuO powder

2003

Transient effects in the microwave second-order response of YBaCuO powder are investigated. The time evolution of the second harmonic signal has been measured for about 300 s after the sample had been exposed to variations of the DC magnetic field. We show that in different time scales the transient response has different origin. In the time scale of milliseconds the transient response of samples in the critical state is ascribable to processes of flux redistribution induced by the switching on/off of the microwave field. At longer times, the time evolution of the second harmonic signal can be ascribed to motion of fluxons induced by the variation of the DC magnetic field. In particular, di…

SuperconductivityMillisecondMaterials scienceCondensed matter physicsFluxonCondensed Matter - SuperconductivityTime evolutionEnergy Engineering and Power TechnologySecond-harmonic generationFOS: Physical sciencesCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsMagnetic fieldSuperconductivity (cond-mat.supr-con)Fluxon dynamics Magnetic relaxation Non-linear microwave responseTransient responseElectrical and Electronic EngineeringMicrowave
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