Size of orbital-ordering domain controlled by the itinerancy of the 3d electrons in a manganite thin film

Y. Wakabayashi,1,2 H. Sagayama,3 T. Arima,3 M. Nakamura,4,* Y. Ogimoto,5,6 Y. Kubo,5 K. Miyano,5,6 and H. Sawa1,7 1Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan 2Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan 3IMRAM, Tohoku University, Sendai 980-8577, Japan 4Department of Applied Physics, University of Tokyo, Tokyo 113-8586, Japan 5Research Center for Advanced Science and Technology, University of Tokyo, Tokyo 153-8904, Japan 6CREST, Japan Science and Technology Agency, Honcho 4-1-8, Kawaguchi 332-0012, Japan 7Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan Received 13 April 2009; published 10 June 2009