Critical-state effects on microwave losses in type-II superconductors
arXiv:cond-mat/0603646 · doi:10.1140/epjb/e2006-00320-9
Abstract
We discuss the microwave energy losses in superconductors in the critical state. The field-induced variations of the surface resistance are determined, in the framework of the Coffey and Clem model, by taking into account the distribution of the vortex magnetic field inside the sample. It is shown that the effects of the critical state cannot generally be disregarded to account for the experimental data. Results obtained in bulk niobium at low temperatures are quantitatively justified.
4 pages, 4 embedded figures, to be published on Eur. Phys. J. B
References in corpus (1)
Cited by in corpus (5)
- Magnetic hysteresis in the microwave surface resistance of Nb samples in the critical state
- Depinning frequency in a heavily neutron-irradiated MgB2 sample
- Microwave surface resistance of pristine and neutron-irradiated MgB2 samples in magnetic field
- Field-induced suppression of the pi-band superconductivity and magnetic hysteresis in the microwave surface resistance of MgB_2 at temperatures near T_c
- Anomalous magnetic hysteresis in the microwave surface resistance of MgB2 superconductor