Effect of gadolinium doping on the electronic band structure of europium oxide

Juan A. Colon Santana,1 Joonhee M. An,2 Ning Wu,2 Kirill D. Belashchenko,2 Xianjie Wang,3 Pan Liu,3 Jinke Tang,3 Yaroslav Losovyj,4 I. N. Yakovkin,5 and P. A. Dowben2 1Department of Electrical Engineering, W. Scott Engineering Center, North 16th Street, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0656, USA 2Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Theodore Jorgensen Hall, 855 North 16th Street, Lincoln, Nebraska 68588-0299, USA 3Department of Physics & Astronomy, University of Wyoming, Laramie, Wyoming 82071, USA 4Center for Advanced Microstructures and Devices, Louisiana State University, 6980 Jefferson Highway, Baton Rouge, Louisiana 70806, USA 5Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauki 46, Kyiv 680028, Ukraine (Received 2 August 2011; revised manuscript received 30 November 2011; published 5 January 2012)