"T. Makino,Y. Furuta,A. Tsukazaki,A. Ohtomo,Y. Segawa,R. Shen,S. Takeyama,Y. Takagi,M. Kawasaki","Collective effects in magneto-optical spectra of high-density electron system in modulation-doped ZnO/MgxZn1-xO quantum wells","The 2010 WPI-AIMR Annual Workshop",,,,,,2010,Mar. "T. Makino,Y. Furuta,Y. Segawa,A. Tsukazaki,A. Ohtomo,Y. Hirayama,R. Shen,S. Takeyama,Y. Takagi,M. Kawasaki","Charged exciton emission in n-type modulation-doped ZnO/MgZnO single quantum wells","RIEC-CNSI Work Shop",,,,,,2009,Oct. "T. Makino,Y. Furuta,Y. Segawa,A. Tsukazaki,A. Ohtomo,Y. Hirayama,R. Shen,S. Takeyama,Y. Takagi,M. Kawasaki","Magneto-optical study of n-type modulation-doped ZnO/MgxZn(1-x)O single quantum well structures",,"Physical Review B",,"Vol. 80","No. 15"," 155333-1-5",2009,Oct. "T. Makino,Y. Furuta,Y. Segawa,A. Tsukazaki,A. Ohtomo,Y. Hirayama,R. Shen,S. Takeyama,Y. Takagi,M. Kawasaki","Emission blueshift of ZnO/ MgZnO single quantum wells with n-type doping to barrier layers","The OECS 11 (International Conference on Optics of Excitons in Confined Systems)",,,,,,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. "古田 洋平,牧野 哲征,塚崎 敦,大友 明,瀬川 勇三朗,平山 康博,嶽山 正二郎,高木 芳弘,川崎 雅司","ZnO変調ドープ量子井戸における励起子発光・反射の偏光特性","日本物理学会第64回年次大会",,,,,,2009,Mar. "T. Makino,Y. Furuta,A. Tsukazaki,A. Ohtomo,Y. Segawa,Y. Takagi,M. Kawasaki","Quantum-confined Stark and Franz?Keldysh effects in ZnO/MgxZn1-xO quantum well structures","The WPI-AIMR 2009 March Annual Workshop",,,,,,2009,Mar. "T. Makino,A. Tsukazaki,A. Ohtomo,M. Kawasaki,Y. Segawa","Optical and electrical properties of ZnO and related hetero-structures",,"Proceedings of the International Workshop on Photonics and Applications (Advances in Optics, Photonics, Spectroscopy & Applications V, edited by P. Brechignac, K. Hakuta, H. Lim, N.V. Hieu, N.D. Hung and V. A. Orlovich)","Vietnam Academic Press",,,"pp. 72-78",2009,Feb. "T. Makino,Y. Segawa,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Photoexcitation screening of the built-in electric field in ZnO single quantum wells",,"Applied Physics Letters","American Institute of Physics","Vol. 93","No. 12"," 121907-1-3",2008,Sept. "A. Ohtomo,S. Takagi,K. Tamura,T. Makino,Y. Segawa,H. Koinuma,M. Kawasaki","Photo-irresponsive thin-film transistor with MgxZn1-xO channel",,"Japanese Journal of Applied Physics Part 2-Letters & Express Letters",,"Vol. 45","No. 24-28","pp. L694-L696",2006,July "T. Makino,Y. Segawa,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Majority-carrier mobilities in undoped and n-type doped ZnO epitaxial layers",,"Physica Status Solidi C",,"Vol. 3","No. 4","pp. 956-959",2006,Mar. "A. Ohkubo,A. Ohtomo,J. Nishimura,T. Makino,Y. Segawa,M. Kawasaki","Combinatorial synthesis and optical characterization of alloy and superlattice films based on SrTiO3 and LaAlO3",,"Applied Surface Science",,"Vol. 252","No. 7","pp. 2488-2492",2006,Jan. "Z. K. Tang,M. Kawasaki,A. Ohtomo,H. Koinuma,Y. Segawa","Self-assembled ZnO nano-crystals and exciton lasing at room temperature",,"Journal of Crystal Growth",,"Vol. 287","No. 1","pp. 169-179",2006,Jan. "T. Makino,Y. Segawa,M. Kawasaki,A. Ohtomo","Analysis on reflection spectra in strained ZnO thin films",,"Journal of Crystal Growth",,"Vol. 287","No. 1","pp. 124-127",2006,Jan. "T. Makino,Y. Segawa,S. Yoshida,A. Tsukazaki,A. Ohtomo,M. Kawasaki,H. Koinuma","Spectral shape analysis of ultraviolet luminescence in n-type ZnO : Ga",,"Journal of Applied Physics",,"Vol. 98","No. 9"," 093520-1-4",2005,Nov. "T. Makino,Y. Segawa,S. Yoshida,A. Tsukazaki,A. Ohtomo,M. Kawasaki,H. Koinuma","Free-carrier effects on zero- and one-phonon absorption onsets of n-type ZnO",,"Japanese Journal of Applied Physics Part 1-Regular Papers Brief Communications & Review Papers",,"Vol. 44","No. 10","pp. 7275-7280",2005,Oct. "T. Makino,Y. Segawa,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Electron transport in ZnO thin films",,"Applied Physics Letters",,"Vol. 87","No. 2"," 022101-1-3",2005,July "A. Tsukazaki,A. Ohtomo,T. Onuma,M. Ohtani,T. Makino,M. Sumiya,K. Ohtani,S. F. Chichibu,S. Fuke,Y. Segawa,H. Ohno,H. Koinuma,M. Kawasaki","Repeated temperature modulation epitaxy for p-type doping and light-emitting diode based on ZnO",,"Nature Materials",,"Vol. 4","No. 1","pp. 42-46",2005,Jan. "T. Makino,Y. Segawa,S. Yoshida,A. Tsukazaki,A. Ohtomo,M. Kawasaki","Gallium concentration dependence of room-temperature near-band-edge luminescence in n-type ZnO : Ga",,"Applied Physics Letters",,"Vol. 85","No. 5","pp. 759-761",2004,Aug. "A. Tsukazaki,A. Ohtomo,M. Kawasaki,T. Makino,C. H. Chia,Y. Segawa,H. Koinuma","Emission from the higher-order excitons in ZnO films grown by laser molecular-beam epitaxy",,"Applied Physics Letters",,"Vol. 84","No. 19","pp. 3858-3860",2004,May "T. Makino,A. Ohtomo,C. H. Chia,Y. Segawa,H. Koinuma,M. Kawasaki","Internal electric field effect on luminescence properties of ZnO/(Mg,Zn)O quantum wells",,"Physica E-Low-Dimensional Systems & Nanostructures",,"Vol. 21","No. 2-4","pp. 671-675",2004,Mar. "A. Tsukazaki,A. Ohtomo,S. Yoshida,M. Kawasaki,C. H. Chia,T. Makino,Y. Segawa,T. Koida,S. F. Chichibu,H. Koinuma","Layer-by-layer growth of high-optical-quality ZnO film on atomically smooth and lattice relaxed ZnO buffer layer",,"Applied Physics Letters",,"Vol. 83","No. 14","pp. 2784-2786",2003,Oct. "T. Makino,K. Tamura,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,H. Koinuma","Temperature quenching of exciton luminescence intensity in ZnO/(Mg,Zn)O multiple quantum wells",,"Journal of Applied Physics",,"Vol. 93","No. 10","pp. 5929-5933",2003,May "C.H. Chia,T. Makino,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Confinement-enhanced biexciton binding energy in ZnO/ZnMgO multiple quantum wells",,"Applied Physics Letters",,"Vol. 82","No. 12","pp. 1848-1850",2003,Apr. "T. Makino,K. Tamura,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,H. Koinuma","Size dependence of exciton-longitudinal-optical-phonon coupling in ZnO/Mg0.27Zn0.73O quantum wells",,"Physical Review B",,"Vol. 66","No. 23"," 233305-1-3",2002,Dec. "T. Makino,K. Tamura,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,H. Koinuma","Photoluminescence properties of ZnO epitaxial layers grown on lattice-matched ScAlMgO4 substrates",,"Journal of Applied Physics",,"Vol. 92","No. 12","pp. 7157-7159",2002,Dec. "T. Makino,K. Tamura,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,H. Koinuma","Effect of MgZnO-layer capping on optical properties of ZnO epitaxial layers",,"Applied Physics Letters",,"Vol. 81","No. 12","pp. 2172-2174",2002,Sept. "T. Makino,K. Tamura,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,H. Koinuma","Radiative recombination of electron-hole pairs spatially separated due to quantum-confined Stark and Franz-Keldish effects in ZnO/Mg0.27Zn0.73O quantum wells",,"Applied Physics Letters",,"Vol. 81","No. 13","pp. 2355-2357",2002,Sept. "H. D. Sun,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Phonon replicas in ZnO/ZnMgO multiquantum wells",,"Journal of Applied Physics",,"Vol. 91","No. 10","pp. 6457-6460",2002,May "T. Makino,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,Y. Matsumoto,H. Koinuma","High-throughput optical characterization for the development of a ZnO-based ultraviolet semiconductor-laser",,"Applied Surface Science",,"Vol. 189","No. 3-4","pp. 277-283",2002,Apr. "T. Makino,K. Tamura,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,H. Koinuma","Optical properties of ZnO : Al epilayers: Observation of room-temperature many-body absorption-edge singularity",,"Physical Review B",,"Vol. 65","No. 12"," 121201(R)-1-4",2002,Mar. "H. D. Sun,T. Makino,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Enhancement of exciton binding energies in ZnO/ZnMgO multiquantum wells",,"Journal of Applied Physics",,"Vol. 91","No. 4","pp. 1993-1997",2002,Feb. "C.H. Chia,T. Makino,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Well-width dependence of radiative and nonradiative lifetimes in ZnO-based multiple quantum wells",,"Physica Status Solidi B-Basic Research",,"Vol. 229","No. 2","pp. 863-866",2002,Jan. "H. D. Sun,Y. Segawa,T. Makino,C. H. Chia,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Observation of biexciton emission in ZnO/ZnMgO multi-quantum wells",,"Physica Status Solidi B-Basic Research",,"Vol. 229","No. 2","pp. 867-870",2002,Jan. "T. Makino,K. Tamura,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,H. koinuma","Optical properties of ZnO : Al epilayers and of undoped epilayers capped by wider-gap MgZnO grown by laser MBE",,"Physica Status Solidi B-Basic Research",,"Vol. 229","No. 2","pp. 853-857",2002,Jan. "T. Makino,N. T. Tuan,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Exciton localization in (Cd,Zn)O epilayers and (Cd,Zn)O/(Mg,Zn)O multi-quantum wells on lattice matched substrates",,"International Journal of Modern Physics B","World Scientific Publishing","Vol. 15","No. 28-30","pp. 3853-3856",2001,Dec. "C. H. Chia,T. Makino,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Well-width dependence of radiative and nonradiative recombination times in ZnO/Mg0.12Zn0.88O multiple quantum wells",,"Journal of Applied Physics",,"Vol. 90","No. 7","pp. 3650-3652",2001,Oct. "T. Makino,T. Yasuda,Y. Segawa,A. Ohtomo,K. Tamura,M. Kawasaki,H. Koinuma","Strain effects on exciton resonance energies of ZnO epitaxial layers",,"Applied Physics Letters",,"Vol. 79","No. 9","pp. 1282-1284",2001,Aug. "H. D. Sun,T. Makino,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Biexciton emission from ZnO/Zn0.74Mg0.26O multiquantum wells",,"Applied Physics Letters",,"Vol. 78","No. 22","pp. 3385-3387",2001,May "H. D. Sun,T. Makino,N. T. Tuan,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates",,"Applied Physics Letters",,"Vol. 78","No. 17","pp. 2464-2466",2001,Apr. "T. Makino,N. T. Tuan,H. D. Sun,C. H. Chia,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,T. Suemoto,H. Akiyama,M. Baba,S. Saito,T. Tomita,H. Koinuma","Temperature dependence of near ultraviolet photoluminescence in ZnO/(Mg, Zn)O multiple quantum wells",,"Applied Physics Letters",,"Vol. 78","No. 14","pp. 1979-1981",2001,Apr. "T. Makino,Y. Segawa,M. Kawasaki,A. Ohtomo,R. Shiroki,K. Tamura,T. Yasuda,H. Koinuma","Band gap engineering based on MgxZn1-xO and CdyZn1-yO ternary alloy films",,"Applied Physics Letters",,"Vol. 78","No. 9","pp. 1237-1239",2001,Feb. "H. D. Sun,T. Makino,N. T. Tuan,Y. Segawa,Z. K. Tang,G. K. L. Wong,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Stimulated emission induced by exciton-exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature",,"Applied Physics Letters",,"Vol. 77","No. 26","pp. 4250-4252",2000,Dec. "A. Ohtomo,K. Tamura,M. Kawasaki,T. Makino,Y. Segawa,Z. K. Tang,G. K. L. Wong,Y. Matsumoto,H. Koinuma","Room-temperature stimulated emission of excitons in ZnO/(Mg, Zn)O superlattices",,"Applied Physics Letters",,"Vol. 77","No. 14","pp. 2204-2206",2000,Oct. "T. Makino,C. H. Chia,N. T. Tuan,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Radiative and nonradiative recombination processes in lattice-matched (Cd,Zn)O/(Mg,Zn)O multiquantum wells",,"Applied Physics Letters",,"Vol. 77","No. 11","pp. 1632-1634",2000,Sept. "F. Siah,J. Yang,Z. K. Tang,G. K. L. Wong,M. Kawasaki,A. Ohtomo,H. Koinuma,Y. Segawa","In-plane anisotropic strain of ZnO closely packed microcrystallites grown on tilted (0001) sapphire",,"Journal of Applied Physics",,"Vol. 88","No. 5","pp. 2480-2483",2000,Sept. "T. Makino,C. H. Chia,N. T. Tuan,H. D. Sun,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Room-temperature luminescence of excitons in ZnO/(Mg, Zn)O multiple quantum wells on lattice-matched substrates",,"Applied Physics Letters",,"Vol. 77","No. 7","pp. 975-977",2000,Aug. "A. Ohtomo,H. Kimura,K. Saito,T. Makino,Y. Segawa,H. Koinuma,M. Kawasaki","Lateral grain size and electron mobility in ZnO epitaxial films grown on sapphire substrates",,"Journal of Crystal Growth",,"Vol. 214",,"pp. 284-288",2000,June "K. Tamura,A. Ohtomo,K. Saikusa,Y. Osaka,T. Makino,Y. Segawa,M. Sumiya,S. Fuke,H. Koinuma,M. Kawasaki","Epitaxial growth of ZnO films on lattice-matched ScAlMgO4(0001) substrates",,"Journal of Crystal Growth",,"Vol. 214",,"pp. 59-62",2000,June "T. Makino,G. Isoya,Y. Segawa,C. H. Chia,T. Yasuda,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Optical spectra in ZnO thin films on lattice-matched substrates grown with laser-MBE method",,"Journal of Crystal Growth",,"Vol. 214",,"pp. 289-293",2000,June "T. Makino,C. H. Chia,N. T. Tuan,Y. Segawa,M. Kawasaki,A. Ohtomo,K. Tamura,H. Koinuma","Exciton spectra of ZnO epitaxial layers on lattice-matched substrates grown with laser-molecular-beam epitaxy",,"Applied Physics Letters",,"Vol. 76","No. 24","pp. 3549-3551",2000,June "T. Makino,N. T. Tuan,Y. Segawa,C. H. Chia,A. Ohtomo,M. Kawasaki,H. Koinuma","Temperature dependence of four-wave-mixing spectra in ZnO thin films on sapphire substrates grown with laser MBE",,"Journal of Luminescence",,"Vol. 87-9",,"pp. 210-212",2000,May "J. W. Tomm,B. Ullrich,X. G. Qiu,Y. Segawa,A. Ohtomo,M. Kawasaki,H. Koinuma","Optical and photoelectrical properties of oriented ZnO films",,"Journal of Applied Physics",,"Vol. 87","No. 4","pp. 1844-1848",2000,Feb. "A. Ohtomo,K. Tamura,K. Saikusa,K. Takahashi,T. Makino,Y. Segawa,H. Koinuma,M. Kawasaki","Single crystalline ZnO films grown on lattice-matched ScAlMgO4(0001) substrates",,"Applied Physics Letters",,"Vol. 75","No. 17","pp. 2635-2637",1999,Oct. "A. Ohtomo,M. Kawasaki,I. Ohkubo,H. Koinuma,T. Yasuda,Y. Segawa","Structure and optical properties of ZnO/Mg0.2Zn0.8O superlattices",,"Applied Physics Letters",,"Vol. 75","No. 7","pp. 980-982",1999,July "P. Yu,Z. K. Tang,G. K. L. Wong,M. Kawasaki,A. Ohtomo,H. Koinuma,Y. Segawa","Excitonic gain and laser emission in ZnO microcrystallites at room temperature",,"Physics of Low-Dimensional Structures",,"Vol. 1-2",,"pp. 243-251",1998,Dec. "A. Ohtomo,M. Kawasaki,T. Koida,H. Koinuma,Y. Sakurai,Y. Yoshida,M. Sumiya,S. Fuke,T. Yasuda,Y. Segawa","Double heterostructure based on ZnO and MgxZn1-xO",,"Silicon Carbide, Iii-Nitrides and Related Materials, Pts 1 and 2",,"Vol. 264-2",,"pp. 1463-1466",1998,Dec. "M. Kawasaki,A. Ohtomo,H. Koinuma,Y. Sakurai,Y. Yoshida,Z. K. Tang,P. Yu,G. K. L. Wong,Y. Segawa","Ultraviolet excitonic laser action at room temperature in ZnO nanocrystalline epitaxial films",,"Silicon Carbide, Iii-Nitrides and Related Materials, Pts 1 and 2","Trans Tech Publications","Vol. 264-2",,"pp. 1459-1462",1998,Dec. "M. Kawasaki,A. Ohtomo,I. Ohkubo,H. Koinuma,Z. K. Tang,P. Yu,G. K. L. Wong,B. P. Zhang,Y. Segawa","Excitonic ultraviolet laser emission at room temperature from naturally made cavity in ZnO nanocrystal thin films",,"Materials Science and Engineering B-Solid State Materials for Advanced Technology",,"Vol. 56","No. 2-3","pp. 239-245",1998,Nov. "A. Ohtomo,M. Kawasaki,Y. Sakurai,I. Ohkubo,R. Shiroki,Y. Yoshida,T. Yasuda,Y. Segawa,H. Koinuma","Fabrication of alloys and superlattices based on ZnO towards ultraviolet laser",,"Materials Science and Engineering B-Solid State Materials for Advanced Technology",,"Vol. 56","No. 2-3","pp. 263-266",1998,Nov. "Z. K. Tang,G. K. L. Wong,P. Yu,M. Kawasaki,A. Ohtomo,H. Koinuma,Y. Segawa","Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films",,"Applied Physics Letters",,"Vol. 72","No. 25","pp. 3270-3272",1998,June "A. Ohtomo,M. Kawasaki,Y. Sakurai,Y. Yoshida,H. Koinuma,P. Yu,Z. K. Tang,G. K. L. Wong,Y. Segawa","Room temperature ultraviolet laser emission from ZnO nanocrystal thin films grown by laser MBE",,"Materials Science and Engineering B-Solid State Materials for Advanced Technology",,"Vol. 54","No. 1-2","pp. 24-28",1998,June "A. Ohtomo,M. Kawasaki,T. Koida,K. Masubuchi,H. Koinuma,Y. Sakurai,Y. Yoshida,T. Yasuda,Y. Segawa","MgxZn1-xO as a II-VI widegap semiconductor alloy",,"Applied Physics Letters",,"Vol. 72","No. 19","pp. 2466-2468",1998,May "P. Yu,Z. K. Tang,G. K. L. Wong,M. Kawasaki,A. Ohtomo,H. Koinuma,Y. Segawa","Room-temperature gain spectra and lasing in microcrystalline ZnO thin films",,"Journal of Crystal Growth",,"Vol. 184",,"pp. 601-604",1998,Feb. "P. Yu,Z. K. Tang,G. K. L. Wong,M. Kawasaki,A. Ohtomo,H. Koinuma,Y. Segawa","Ultraviolet spontaneous and stimulated emissions from ZnO microcrystallite thin films at room temperature",,"Solid State Communications",,"Vol. 103","No. 8","pp. 459-463",1997,Aug. "Y. Segawa,A. Ohtomo,M. Kawasaki,H. Koinuma,Z. K. Tang,P. Yu,G. K. L. Wong","Growth of ZnO thin film by laser MBE: Lasing of exciton at room temperature",,"Physica Status Solidi B-Basic Research",,"Vol. 202","No. 2","pp. 669-672",1997,Aug. "川崎 雅司,大友 明,鯉沼 秀臣,湯 子康,Yu Ping,Wong Goerge K. L.,瀬川 勇三朗","ZnOエキシトンレーザー",,"第25回応物薄膜・表面セミナー",,,,"p. 39-44",1997,Jan. "川崎 雅司,大友 明,鯉沼 秀臣,湯 子康,P. Yu,G. K. L. Wong,瀬川 勇三朗","ZnOの量子構造の形成と室温レーザー発振",,"日本学術振興会第162委員会 第6回研究会資料",,,,"p. 54-59",1997,Jan. "大友 明,川崎 雅司,鯉沼 秀臣,湯 子康,Yu Ping,Wong Goerge K. L.,瀬川 勇三朗","ZnOの量子構造の形成と室温レーザー発振",,"未来開拓研究ニュースレター",,"Vol. 2",," 38-39",1997,Jan.