"K. Nakahara,S. Akasaka,H. Yuji,K. Tamura,T. Fujii,Y. Nishimoto,D. Takamizu,A. Sasaki,T. Tanabe,H. Takasu,H. Amaike,T. Onuma,S. F. Chichibu,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Nitrogen doped Mg<sub>x</sub>Zn<sub>1-x</sub>O/ZnO single heterostructure ultraviolet light-emitting diodes on ZnO substrates",,"Applied Physics Letters","American Institute of Physics","Vol. 97","No. 1","  013501-1-3",2010,July
"Y. Nishimoto,K. Nakahara,D. Takamizu,A. Sasaki,K. Tamura,S. Akasaka,H. Yuji,T. Fujii,T. Tanabe,H. Takasu,A. Tsukazaki,A. Ohtomo,T. Onuma,S. F. Chichibu,M. Kawasaki","Plasma-assisted molecular beam epitaxy of high optical quality MgZnO films on Zn-polar ZnO substrates",,"Applied Physics Express",,"Vol. 1","No. 9","  091202-1-3",2008,Aug.