Ultrafast photoinduced phase separation dynamics in Pr0.6Ca0.4MnO3 thin films T. Mertelj, R. Yusupov, A. Gradišek, M. Filippi, W. Prellier and D. Mihailovic EPL, 86 5 (2009) 57003 Published online: 22 June 2009 DOI: 10.1209/0295-5075/86/57003