Transient and magnetic hysteresis in the microwave second-order response of BKBO crystals in the critical state
INFM, Unità di Palermo and Dipartimento
di Scienze Fisiche e Astronomiche
Via Archirafi 36, I-90123 Palermo, Italy
Accepted: 30 June 2000
The second-order microwave response of crystals in the critical state is investigated. Two different effects have been highlighted in second harmonic emission by superconductors exposed to intense pulsed microwave fields: a hysteretic behaviour and a time decay of the second harmonic signal intensity. Evidence is given that the two effects are strictly related.
PACS: 74.25.Ha – Magnetic properties / 74.25.Nf – Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.) / 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics
© EDP Sciences, 2000