"S. Akasaka,A. Tsukazaki,K. Nakahara,A. Ohtomo,M. Kawasaki","Improvement of electron mobility above 100,000cm<sup>2</sup> V<sup>-1</sup>s<sup>-1</sup> in Mg<sub>x</sub>Zn<sub>1-x</sub>O/ZnO heterostructures",,"Japanese Journal of Applied Physics","The Japan Society of Applied Physics","Vol. 50",,"  080215-1-3",2011,Aug.
"S. Akasaka,K. Nakahara,H. Yuji,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Preparation of an epitaxy-ready surface of a ZnO(0001) substrate",,"Applied Physics Express","The Japan Society of Applied Physics","Vol. 4","No. 3","  035701-1-3",2011,Mar.
"A. Tsukazaki,S. Akasaka,K. Nakahara,Y. Ohno,H. Ohno,D. Maryenko,A. Ohtomo,M. Kawasaki","Observation of the fractional quantum Hall effect in an oxide",,"Nature Materials","Nature Publishing Group","Vol. 9","No. 11","pp. 889-893",2010,Oct.
"塚崎 敦,中野 匡規,大友 明,上野 和紀,赤坂 俊輔,湯地 洋行,中原 健,福村 知昭,川崎 雅司","酸化亜鉛系分極不整合界面の2次元伝導と導電性高分子を用いた伝導性制御",,"まてりあ",,"Vol. 49","No. 7","pp. 312",2010,July
"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
"H. Yuji,K. Nakahara,K. Tamura,S. Akasaka,Y. Nishimoto,D. Takamizu,T. Onuma,S. F. Chichibu,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Optimization of the growth conditions for molecular beam epitaxy of Mg<sub>x</sub>Zn<sub>1-x</sub>O (0 <= x <= 0.12) films on Zn-polar ZnO substrates",,"Japanese Journal of Applied Physics","The Japan Society of Applied Physics","Vol. 49","No. 7","  071104-1-5",2010,July
"S. Akasaka,K. Nakahara,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Mg<sub>x</sub>Zn<sub>1-x</sub>O films with a low residual donor concentration (< 10<sup>15</sup> cm<sup>-3</sup>) grown by molecular beam epitaxy",,"Applied Physics Express","The Japan Society of Applied Physics","Vol. 3","No. 7","  071101-1-3",2010,July
"A. Tsukazaki,S. Akasaka,K. Nakahara,A. Kamisawa,Y. Ohno,H. Ohno,A. Ohtomo,M. Kawasaki","Fractional quantum Hall effect in MgZnO/ZnO heterostructures","The 2010 WPI-AIMR Annual Workshop",,,,,,2010,Mar.
"M. Nakano,A. Tsukazaki,A. Ohtomo,K. Ueno,S. Akasaka,H. Yuji,K. Nakahara,T. Fukumura,M. Kawasaki","Electronic-field control of two-dimensional electrons in polymer-gated-oxide semiconductor heterostructures",,"Advanced Materials",,"Vol. 22","No. 8","pp. 876-879",2010,Feb.
"A. Tsukazaki,A. Ohtomo,S. Akasaka,K. Nakahara,Y. Ohno,H. Ohno,M. Kawasaki","The fractional quantum Hall effect in MgZnO/ZnO based haterostructures","16th International Workshop on Oxide Electronics",,,,,,2009,Oct.
"塚崎 敦,赤坂 俊輔,中原 健,神澤 公,大野 裕三,大野 英男,大友 明,川崎雅司","2DEG移動度100,000 cm<sup>2</sup>V<sup>-1</sup>s<sup>-1</sup>を越えるMgZnO/ZnO界面の実現","2009年秋季第70回応用物理学会学術講演会",,,,,,2009,Sept.
"牧野 哲征,瀬川 勇三朗,塚崎 敦,大友 明,沈 睿,嶽山 正二郎,赤坂 俊輔,中原 健,川崎 雅司","ZnO単一ヘテロ構造における磁気発光特性","日本物理学会2009年年次・秋季大会",,,,,,2009,Sept.
"A. Tsukazaki,M. Nakano,S. Akasaka,K. Nakahara,A. Kamisawa,A. Ohtomo,M. Kawasaki","Transistor operation at MgZnO/ZnO interface by Schottky gating with conducting polymer","The 18th International Conference on Electronic Properties of Two-Dimensional Systems (EP2DS-18)",,,,,,2009,July
"A. Tsukazaki,M. Nakano,S. Akasaka,K. Nakahara,A. Kamisawa,A. Ohtomo,M. Kawasaki","Electric-field control of two dimensional transport at MgZnO/ZnO interfaces by conducting polymer Schottky gate","MRS 2009 Spring Meeting",,,,,,2009,Apr.
"A. Tsukazaki,A. Ohtomo,M. Kawasaki,S. Akasaka,H. Yuji,K. Tamura,K. Nakahara,T. Tanabe,A. Kamisawa,T. Gokmen,J. Shabani,M. Shayegan","Spin susceptibility and effective mass of two-dimensional electrons in Mg<sub>x</sub>Zn<sub>1-x</sub>O/ZnO heterostructures",,"Physical Review B",,"Vol. 78","No. 23","  233308-1-4",2008,Dec.
"M. Nakano,T. Makino,A. Tsukazaki,K. Ueno,A. Ohtomo,T. Fukumura,H. Yuji,Y. Nishimoto,S. Akasaka,D. Takamizu,K. Nakahara,T. Tanabe,A. Kamisawa,M. Kawasaki","Mg<sub>x</sub>Zn<sub>1-x</sub>O-based Schottky photodiode for highly color-selective ultraviolet light detection",,"Applied Physics Express",,"Vol. 1","No. 12","  121201-1-3",2008,Dec.
"M. Nakano,T. Makino,A. Tsukazaki,K. Ueno,A. Ohtomo,T. Fukumura,H. Yuji,S. Akasaka,K. Tamura,K. Nakahara,T. Tanabe,A. Kamisawa,M. Kawasaki","Transparent polymer Schottky contact for a high performance visible-blind ultraviolet photodiode based on ZnO",,"Applied Physics Letters",,"Vol. 93","No. 12","  123309-1-3",2008,Sept.
"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.
"A. Tsukazaki,H. Yuji,S. Akasaka,K. Tamura,K. Nakahara,T. Tanabe,H. Takasu,A. Ohtomo,M. Kawasaki","High electron mobility exceeding 10<sup>4</sup> cm<sup>2</sup>V<sup>-1</sup>s<sup>-1</sup> in Mg<sub>x</sub>Zn<sub>1-x</sub>O/ZnO single heterostructures grown by molecular beam epitaxy",,"Applied Physics Express",,"Vol. 1","No. 5","  055004-1-3",2008,May
"A. Ohtomo,A. Tsukazaki,T. Kita,Y. Ohno,H. Ohno,K. Nakahara,H. Yuji,K. Tamura,S. Akasaka,H. Takasu,M. Kawasaki","Quantum Hall effect in ZnO","WPI & IFCAM Joint Workshop "Challenge of Interdisciplinary Materials Science to Technological Innovation of the 21st Century"",,,,,,2008,Feb.
"H. Yuji,K. Nakahara,K. Tamura,S. Akasaka,A. Sasaki,T. Tanabe,H. Takasu,T. Onuma,S. F. Chichibu,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Mg<sub>x</sub>Zn<sub>1-x</sub>O epitaxial films grown on ZnO substrates by molecular beam epitaxy",,"Proceedings of SPIE (Zinc Oxide Materials and Devices III, edited by F. H. Teherani and C. W. Litton)",,"vol. 6895",,"p. 68950D",2008,Feb.