Abstract
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.
Similar content being viewed by others
References
S.M. Sze, Semiconductor Devices Physics and Technology (John Wiley and Sons, Inc., United States of America, 2002)
A.M. Marsh, D.A. Williams, H. Ahmed, Phys. Rev. B 50, 8118 (1994)
J. Kutchinsky, R. Taboryski, O. Kuhm, C.B. Sorensen, P.E. Lindelof, D. Kristensen, J. Bindslev Hansen, C.S. Jacobsen, J.L. Skov, Phys. Rev. B 56, R2932 (1997)
J.M. Baranowski, Z. Liliental-Weber, W.F. Yau, E.R. Weber, Phys. Rev. Lett. 66, 3079 (1991)
M. Strongin, D.L. Miller, Phys. Rev. Lett. 68, 550 (1992)
J.B. Gosk et al., Supercond. Sci. Technol. 21, 065019 (2008)
G.J. Cui et al., IEEE Transaction Magnetics, 25, 2273 (1989)
T. Araya et al., Physica C 445, 986 (2006)
G. Siedel, P.H. Keesom, Phys. Rev. 112, 1083 (1958)
C.A.M. dos Santos et al., Phys. Rev. B 74, 184526 (2006)
K.K. Likharev, Rev. Mod. Phys. 51, 101 (1979)
A. Barone, G. Paterno, Physics and Applications of the Josephson Effect (John Wiley and Sons, Inc., United States of America, 1982)
W. Jurga et al., Acta Physica Polonica A 114, 253 (2008)
M. Tinkham, Introduction to Superconductivity (Mc Graw-Hill, Inc., Singapore, 1996)
A.V. Herzog, P. Xiong, R.C. Dynes, Phys. Rev. B 58, 14199 (1998)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Willems, B., Taylor, D., Fritzsche, J. et al. Temperature and magnetic field dependence of the voltagein GaAs films with superconducting Ga grains. Eur. Phys. J. B 66, 25–28 (2008). https://doi.org/10.1140/epjb/e2008-00386-3
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epjb/e2008-00386-3