Time evolution of the microwave second-harmonic response of MgB2 superconductor
| Autor: | A. Agliolo Gallitto, Gabriella Vaglica, M. Li Vigni |
|---|---|
| Přispěvatelé: | AGLIOLO GALLITTO A, LI VIGNI M, VAGLICA G |
| Rok vydání: | 2004 |
| Předmět: |
Superconductivity
Physics Condensed matter physics Fluxon Condensed Matter - Superconductivity Time evolution FOS: Physical sciences Energy Engineering and Power Technology Second-harmonic generation Condensed Matter Physics Signal Electronic Optical and Magnetic Materials Magnetic field Superconductivity (cond-mat.supr-con) Condensed Matter::Superconductivity Transient (oscillation) Electrical and Electronic Engineering Microwave |
| Zdroj: | Physica C: Superconductivity. 404:6-10 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/j.physc.2003.10.039 |
| Popis: | We report on transient effects in the microwave second-order response of two ceramic MgB2 samples. The time evolution of the second-harmonic signal is investigated for about 500 s after the sample has been exposed to a variation of the dc magnetic field. We suggest that during the first seconds the response is determined by diffusive motion of fluxons, while in the time scale of minutes it is ruled by magnetic relaxation over the surface barrier. Comment: 4 pages, 2 figures (Proceedings of the Third European Conference on Vortex Matter in Superconductors, to be published in Physica C) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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