Temperature and magnetic field dependence of the voltage in GaAs films with superconducting Ga grains B. L. Willems, D. M.J. Taylor, J. Fritzsche, M. Malfait, J. Vanacken, V. V. Moshchalkov, E. Montoya and G. Van Tendeloo Eur. Phys. J. B, 66 1 (2008) 25-28 Published online: 11 October 2008 DOI: 10.1140/epjb/e2008-00386-3