Temperature and magnetic field dependence of the voltagein GaAs films with superconducting Ga grains

Bram Leo Willems, D. M.J. Taylor, J. Fritzsche, M. Malfait, J. Vanacken, V. V. Moshchalkov, Eduardo H Montoya Rossi, G. Van Tendeloo

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

We have studied granular films consisting of nanoscale Ga droplets formed on GaAs films via a method of vacuum annealing to promote As evaporation. For temperatures and magnetic fields below the bulk Ga critical parameters, the samples are very sensitive towards external microwave radiation when two point voltage measurements are performed. Together with the observation of an oscillating magnetic field dependence of the voltage, a scenario in which the samples consist of Josephson-coupled loops seems to be the most likely one for explaining the obtained results.

Idioma originalInglés
Páginas (desde-hasta)25-28
Número de páginas4
PublicaciónEuropean Physical Journal B
Volumen66
N.º1
DOI
EstadoPublicada - nov 2008
Publicado de forma externa

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