Dynamic electrical response of YBaCuO thin films as a function of microstructure in view of applications to agile electronics

Abstract

The electrical characteristics of YBaCuO thin films sputtered on LaA103 and MgO single-crystal substrates have been measured using a pulsed current technique, to avoid ohmic heating effects. The results are discussed in relation with deposition temperature (for films deposited on LaA103) and substrate preparation (for films deposited on MgO). In the latter case, results are also discussed in the framework of a statistical model, which provides an empirical approach for the pinning phenomena in YBaCuO films, when a static magnetic field is applied.