Effects of fabrication routes and material parameters on the control of superconducting currents by gate voltage oleh L. Ruf, T. Elalaily, C. Puglia, Yu. P. Ivanov, F. Joint, M. Berke, A. Iorio, P. Makk, G. De Simoni, S. Gasparinetti, G. Divitini, S. Csonka, F. Giazotto, E. Scheer, A. Di Bernardo