Transport and photoresponse properties in Pr0.5Ca0.5CoO3/Nb-SrTiO3 heterostructureS. G. Zhao, A. Gu, X. L. Yan, L. M. Hao, Y. Xie, T. Zhang and K. X. JinEPL, 108 6 (2015) 67007DOI: https://doi.org/10.1209/0295-5075/108/67007