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2013-12-16

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Avalanche-like vortex penetration driven by pulsed microwave fields in an epitaxial LaSrCuO thin film

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Recurs relacionat

http://dx.doi.org/10.1063/1.4848997

Resum

Different vortex penetration regimes have been registered in the output voltage signal of a magnetometer when single microwave pulses are applied to an epitaxial overdoped La2− x Sr x CuO4 thin film in a perpendicular dc magnetic field. The onset of a significant variation in the sample magnetization which exists below threshold values of temperature, dc magnetic field, and pulse duration is interpreted as an avalanche-type flux penetration. The microwave contribution to the background electric field suggests that the nucleation of this fast vortex motion is of electric origin, which also guarantees the occurrence of vortex instabilities under adiabatic conditions via the enhancement of the flux flow resistivity. Flux creep phenomena and heat transfer effects act as stabilizing factors against the microwave-pulse-induced fast flux diffusion.

Matèries

Superconductors, Camps magnètics, Pel·lícules fines, Camps elèctrics

Matèries (anglès)

Superconductors, Magnetic fields, Thin films, Electric fields

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Articles publicats en revistes (Física de la Matèria Condensada)

Citació

CUADRA-SOLÍS, Pedro-de-Jesús, et al. Avalanche-like vortex penetration driven by pulsed microwave fields in an epitaxial LaSrCuO thin film. Journal of Applied Physics. 2013. Vol. 114, num. 233902-1-233902-7. ISSN 0021-8979. [consulted: 22 of June of 2026]. Available at: https://hdl.handle.net/2445/51243

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