Ultrafast electron spin dynamics in ZnO and Zn1-xCoxO sol-gel thin filmsM. Raskin, K. Whitaker, G. Kiliani, K. Beha, S. T. Ochsenbein, N. Janßen, T. Stiehm, M. Fonin, U. Rüdiger, A. Leitenstorfer, D. R. Gamelin and R. BratschitschEPJ Web of Conferences, 41 (2013) 03015DOI: https://doi.org/10.1051/epjconf/20134103015