Evidence for carrier-induced high- ferromagnetism in Mn-doped GaN filmS. Yoshii, S. Sonoda, T. Yamamoto, T. Kashiwagi, M. Hagiwara, Y. Yamamoto, Y. Akasaka, K. Kindo and H. HoriEPL, 78 3 (2007) 37006DOI: https://doi.org/10.1209/0295-5075/78/37006