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磯部 寛之 大谷 啓太 大友 明 大野 雄高 高村 禅 塚越 一仁 舟窪 浩
研究者紹介
 
酸化物量子井戸構造を用いた発光素子及び光非線形性素子の開発
大友 明 (おおとも あきら)
(東北大学 金属材料研究所 助手)
  URL: http://www.kawasaki.imr.tohoku.ac.jp/ (川崎研究室)

生年 1972年
出身地 神奈川県
学歴
 
1995年3月 東京工業大学工学部無機材料工学科卒業
1997年3月 東京工業大学大学院総合理工学研究科材料科学専攻修士課程修了
2000年3月 東京工業大学大学院総合理工学研究科物質科学創造専攻博士課程修了

職歴
 
2000年4月〜'02年7月 ルーセント・テクノロジー社ベル研究所 ポスドク研究員
2002年7月〜現在 東北大学金属材料研究所超高圧化学研究部門 助手
2002年7月〜現在

物質・材料研究機構物質研究所コンビナトリアル化合物機能開発研究グループ客員研究員(兼任)

研究歴
 
1994年〜'95年 高温超伝導ジョセフソントンネル接合に関する研究
1996年〜'96年 走査型トンネル顕微鏡による酸化物表面観察の研究
1996年〜'02年

レーザー分子線エピタキシー法による酸化亜鉛量子構造の作製と発光特性に関する研究
2000年〜'02年 酸化物薄膜原子層エピタキシとへテロ界面の電子物性に関する研究
2002年〜現在 酸化物薄膜のコンビナトリアル作製プロセス及び迅速評価技術の開発
2002年〜現在 透明酸化物電界効果トランジスタについての研究
2002年〜現在 酸化物低次元構造の光・電子物性についての研究

受賞
 
1994年
.
日本MRS学術シンポジウム優秀賞
「高温超伝導ジョセフソントンネル接合の作製」
1997年
.
応用物理学会講演奨励賞
「Ex-situ紫外線・オゾン処理による酸化物表面の清浄化」
2001年
.
.
手島記念研究賞(博士論文賞)
"Quantum Structures and Ultraviolet Light Emitting Devices Based on ZnO Thin Films Grown by Laser Molecular-Beam Epitaxy"
2003年
.
安藤博記念学術奨励賞
「酸化亜鉛量子構造の創製と光機能性に関する研究」
2003年
.
原田研究奨励賞
「バンド絶縁体-モット絶縁体界面の電荷変調と金属伝導」
 
発表論文リスト >>>さきがけ研究
 
[2004] 1. "A high mobility electron gas at the LaAlO3/SrTiO3 heterointerface" A. Ohtomo and H. Y. Hwang Nature, 423-426 (2004).

2. "Modeling of grain Boundary barrier modulation in ZnO invisible thin film transistors" F. M. Hossain, J. Nishii, S. Takagi, T. Sugihara, A. Ohtomo, T. Fukumura, H. Koinuma, H. Ohno, M. Kawasaki Physica E, in press.

3. "High mobility electrons in SrTiO3 heterostructures" H. Y. Hwang, A. Ohtomo, N. Nakagawa, D. A. Muller, J. L. Grazul, D. R. Hamann Physica E, in press.

4. "Internal electric field effect on luminescence properties of ZnO/(Mg,Zn)O quantum wells" T. Makino, A. Ohtomo, C.H. Chia, Y. Segawa, H. Koinuma, M. Kawasaki Physica E, in press.

5. "SIMS analysis for ZnO films co-doped with N and Ga by using temeprature gradient method in pulsed laser deposition" M. Sumiya, A. Tsukazaki, A. Ohtomo, S. Fuke, H. Koinuma, M. Kawasaki Appl. Surf. Sci., 223, 206-209 (2004).
[2003] 6. "Resonant exciton second-harmonic generation in self-assembled ZnO microcrystalline thin films" X.Q. Zhang, Z.K. Tang, M. Kawasaki, A. Ohtomo, H. Koinuma J. Phys. Condens. Matter 15, 5191-5196 (2003)

7. "Optical gain in self-assembled ZnO microcrystalline thin films" X.Q. Zhang, Z.K. Tang, M. Kawasaki, A. Ohtomo, H. Koinuma J. Cryst. Growth 259, 286-290 (2003).

8. "Layer-by-layer growth of high-optical-quality ZnO film on atomically smooth and lattice relaxed ZnO buffer layer" A. Tsukazaki, A. Ohtomo, S. Yoshida, M. Kawasaki, C.H. Chia, T. Makino, Y. Segawa, T. Koida, S. F. Chichibu, H. Koinuma Appl. Phys. Lett. 83, 2784-2786 (2003).

9. "Temperature quenching of exciton luminescence intensity in ZnO/(Mg, Zn)O multiple quantum wells" T. Makino, K. Tamura, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, H. Koinuma J. Appl. Phys. 93, 5929-5933 (2003).

10. "High mobility thin film transistor with transparent ZnO channels" J. Nishii, F. M. Hossain, T. Aita, Y. Ohmaki, S. Kishimoto, T. Fukumura, Y. Ohno, H. Ohno, S. Takagi, K. Saikusa, I. Ohkubo, A. Ohtomo, F. Matsukura, H. Koinuma, M. Kawasaki Jpn. J. Appl. Phys. 42, L347-L266 (2003).

11. "Confinement-enhanced biexciton binding energy in ZnO/ZnMgO multi-quantum wells" C.H. Chia, T. Makino, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Appl. Phys. Lett. 82, 1848-1850 (2003).

12. "Quantitative control and detection of heterovalent impurities in ZnO thin films grown by pulsed laser deposition" M. Sumiya, S. Fuke, A. Tsukazaki, K. Tamura, A. Ohtomo, M. Kawasaki, H. Koinuma J. Appl. Phys. 93, 2562-2569 (2003).

[2002] 13. "Artificial charge-modulation in atomic-scale perovskite titanate superlattices" A. Ohtomo, D. A. Muller, J. L. Grazul, H. Y. Hwang Nature 419, 378-380 (2002).

14. "Radiative recombination of electron-hole pairs spatially separated due to quantum-confined Stark and Franz-Keldish effects in ZnO/Mg0.27Zn0.73O quantum wells" T. Makino, K. Tamura, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, H. Koinuma Appl. Phys. Lett. 81, 2355-2357 (2002).

15. "Effect of MgZnO-layer capping on optical properties of ZnO epitaxial layers" T. Makino, K. Tamura, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, H. Koinuma Appl. Phys. Lett. 81, 2172-2174 (2002).

16. "Epitaxial growth and electronic structure of LaTiOx films" A. Ohtomo, D. A. Muller, J. L. Grazul, H. Y. Hwang Appl. Phys. Lett. 80, 3922-3924 (2002).

17. "Photoluminescence properties of ZnO epitaxial layers grown on lattice-matched ScAlMgO4 substrates" T. Makino, K. Tamura, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, H. Koinuma J. Appl. Phys. 92, 7157-7159 (2002).

18. "Phonon replicas in ZnO/ZnMgO multiquantum wells" H.D. Sun, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma J. Appl. Phys. 91, 6457-6460 (2002).

19. "Enhancement of exciton binding energies in ZnO/ZnMgO multiquantum wells" H.D. Sun, T. Makino, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma J. Appl. Phys. 91, 1993-1997 (2002).

20. "Size dependence of exciton-longitudinal-optical-phonon coupling in ZnO/Mg0.27Zn0.73O quantum wells" T. Makino, K. Tamura, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, H. Koinuma Phys. Rev. B 66, 233305 1-3 (2002).

21. "Optical properties of ZnO: Al epilayers: Observation of room-temperature many-body absorption-edge singularity" T. Makino, K. Tamura, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, H. Koinuma Phys. Rev. B 65, 121201 1-4 (2002).

22. "High-throughput optical characterization for the development of a ZnO-based ultraviolet semiconductor-laser" T. Makino, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, Y. Matsumoto, H. Koinuma Appl. Surf. Sci. 189, 277-283 (2002).

23. "Observation of biexciton emission in ZnO/ZnMgO multi-quantum wells" H.D. Sun, Y. Segawa, T. Makino, C.H. Chia, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Phys. Stat. Sol. B 229, 867-870 (2002).

24. "Well-width dependence of radiative and nonradiative lifetimes in ZnO-based multiple quantum wells" C.H. Chia, T. Makino, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Phys. Stat. Sol. B 229, 863-866 (2002).

25. "Optical properties of ZnO: Al epilayers and of undoped epilayers capped by wider-gap MgZnO grown by laser MBE" T. Makino, K. Tamura, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, H. Koinuma Phys. Stat. Sol. B 229, 853-857 (2002).

26. "High-throughput x-ray diffractometer for combinatorial epitaxial thin films" M. Ohtani, T. Fukumura, A. Ohtomo. T. Kikuchi, K. Omote, H. Koinuma, M. Kawasaki Mat. Res. Soc. Symp. Proc. 700, 125-130 (2002).

[2001] 27. "Concurrent x-ray diffractometer for high throughput structural diagnosis of epitaxial thin films" M. Ohtani, T. Fukumura, M. Kawasaki, K. Omote, T. Kikuchi, J. Harada, A. Ohtomo, M. Lippmaa, T. Ohnishi, D. Komiyama, R. Takahashi, Y. Matsumoto, H. Koinuma Appl. Phys. Lett. 79, 3594-3596 (2001).

28. "Strain effects on exciton resonance energies of ZnO epitaxial layers" T. Makino, T. Yasuda, Y. Segawa, A. Ohtomo, K. Tamura, M. Kawasaki, H. Koinuma Appl. Phys. Lett. 79, 1282-1284 (2001).

29. "Parallel integration and characterization of nanoscaled epitaxial lattices by concurrent molecular layer epitaxy and diffractometry" T. Ohnishi, D. Komiyama, T. Koida, S. Ohashi, C. Stauter, H. Koinuma, A. Ohtomo, M. Lippmaa, N. Nakagawa, M. Kawasaki, T. Kikuchi, K. Omote Appl. Phys. Lett. 79, 536-538 (2001).

30. "Biexciton emission from ZnO/Zn0.74Mg0.26O multi-quantum wells" H.D. Sun, T. Makino, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Appl. Phys. Lett. 78, 3385-3387 (2001).

31. "Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates" H.D. Sun, T. Makino, N.T. Tuan, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Appl. Phys. Lett. 78, 2464-2466 (2001).

32. "Temperature dependence of near ultraviolet photoluminescence in ZnO/(Mg, Zn)O multiple quantum wells" 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 Appl. Phys. Lett. 78, 1979-1981 (2001).

33. "Band gap engineering based on MgxZn1-xO and CdyZn1-yO ternary alloy films" T. Makino, Y. Segawa, M. Kawasaki, A. Ohtomo, R. Shiroki, K. Tamura, T. Yasuda, H. Koinuma Appl. Phys. Lett. 78, 1237-1239 (2001).

34. "Well-width dependence of radiative and nonradiative recombination times in ZnO/Mg0.12Zn0.88O multiple quantum wells" C.H. Chia, T, Makino, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma J. Appl. Phys. 90, 3650-3652 (2001).

35. "Excitonic localization in (Cd, Zn)O epilayers and (Cd, Zn)O/(Mg, Zn)O multi-quantum well on lattice-matched substrates" T. Makino, N.T. Tuan, C.H. Chia, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Int'l J. Mod. Phys. B 15, 3853-3856 (2001).

36. "Optically pumped stimulated emission in ZnO/ZnMgO multiple quantum wells prepared by combinatorial techniques" H.D. Sun, T. Makino, Y. Segawa, Z.K. Tang, G.K.L. Wong, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Proc. SPIE 4281 68-76 (2001).

37. "Well-width dependence of excitonic-phonon coupling strength in ZnO/(Mg, Zn)O multiple quantum wells grown by combinatorial molecular-beam epitaxy" T. Makino, H.D. Sun, N.T. Tuan, Y. Segawa, C.H. Chia, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Proc. SPIE, 4281, 59-67 (2001).

38. "Time-resolved luminescence spectra in (Cd, Zn)O/(Mg, Zn)O multi-quantum wells on lattice-matched substrates" T. Makino, N.T. Tuan, Y. Segawa, C.H. Chia, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Proc. 25th Int'l Conf. Phys. Semicond. 1551-1552 (2001).

[2000] 39. "Stimulated emission induced by exciton-exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature" 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 Appl. Phys. Lett. 77, 4250-4252 (2000).

40. "Room-temperature stimulated emission of excitons in ZnO/(Mg, Zn)O superlattices" A. Ohtomo, K. Tamura, M. Kawasaki, T. Makino, Y. Segawa, Z.K. Tang, G.K.L. Wong, Y. Matsumoto; H. Koinuma Appl. Phys. Lett. 77, 2204-2206 (2000).

41. "Radiative and nonradiative recombination processes in lattice-matched (Cd,Zn)O/(Mg,Zn)O multiquantum wells" T. Makino, C.H. Chia, N.T. Tuan, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Appl. Phys. Lett. 77, 1632-1634 (2000).

42. "Room-temperature luminescence of excitons in ZnO/(Mg, Zn)O multiple quantum wells on lattice-matched substrates" T. Makino, C.H. Chia, N.T. Tuan, H.D. Sun, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Appl. Phys. Lett. 77, 975-977 (2000).

43. "Exciton spectra of ZnO epitaxial layers on lattice-matched substrates grown with laser-molecular-beam epitaxy" T. Makino, C.H. Chia, N.T. Tuan, Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Appl. Phys. Lett. 76, 3549-3551 (2000).

44. "In-plane anisotropic strain of ZnO closely packed microcrystallites grown on tilted (0001) sapphire" F. Siah; Z. Yang; Z.K. Tang; G.K.L. Wong, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa J. Appl. Phys. 88, 2480-2483 (2000).

45. "Growth mode and surface morphology of a GaN film deposited along the N-face polar direction on c-plane sapphire substrate" M. Sumiya, K. Yoshimura, T. Ito, K. Ohtsuka, S. Fuke, K. Mizuno, M. Yoshimoto, H. Koinuma, A. Ohtomo, M. Kawasaki J. Appl. Phys. 88, 1158-1165 (2000).

46. "Optical and photoelectrical properties of oriented ZnO films" J. W. Tomm, B. Ullrich, X.G. Qiu, Y. Segawa, A. Ohtomo, M. Kawasaki, H. Koinuma J. Appl. Phys. 87, 1844-1848 (2000).

47. "Optical spectra in ZnO thin films on lattice-matched substrates grown with laser-MBE method" T. Makino, G. Isoya, Y. Segawa, C.H. Chia, T. Yasuda, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma J. Cryst. Growth 214, 289-293 (2000).

48. "Lateral grain size and electron mobility in ZnO epitaxial films grown on sapphire substrates" A. Ohtomo, H. Kimura, K. Saito, T. Makino, Y. Segawa, H. Koinuma, M. Kawasaki J. Cryst. Growth 214, 284-288 (2000).

49. "Epitaxial growth of ZnO films on lattice-matched ScAlMgO4(0001) substrates" K. Tamura, A. Ohtomo, K. Saikusa, Y. Osaka, T. Makino, Y. Segawa, M. Sumiya, S. Fuke, H. Koinuma, M. Kawasaki J. Cryst. Growth 214, 59-62 (2000).

50. "Combinatorial laser MBE synthesis of 3d ion doped epitaxial ZnO thin films" Z.W. Jin, M. Murakami, T. Fukumura, Y. Matsumoto, A. Ohtomo, M. Kawasaki, H. Koinuma J. Cryst. Growth 214, 55-58 (2000).

51. "Concept and development of combinatorial laser MBE for oxide electronics" H. Koinuma, M. Kawasaki, T. Itoh, A. Ohtomo, M. Murakami, Z.W. Jin, Y. Matsumoto Phyica C 335, 245-250 (2000).

52. "Investigation of ZnO/sapphire interface and formation of ZnO nanocrystalline by laser MBE" I. Ohkubo, Y. Matsumoto, A. Ohtomo, T. Ohnishi, A. Tsukazaki, M. Lippmaa, H. Koinuma, M. Kawasaki Appl. Surf. Sci. 159, 514-519 (2000).

53. "Temperature dependence of four-wave-mixing spectra in ZnO thin films on sapphire substrates grown with laser MBE" T. Makino, N.T. Tuan, Y. Segawa, C.H. Chia, A. Ohtomo, M. Kawasaki, H. Koinuma J. Lumin. 87-89, 210-212 (2000).

54. "Novel semiconductor technologies of ZnO films towards ultraviolet LEDs and invisible FETs" A. Ohtomo and M. Kawasaki IEICE Trans. Electron. E83C, 1614-1617 (2000).

55. "A convergent-beam parallel detection x-ray diffraction system for characterizing combinatorial epitaxial thin films" K. Omote, T. Kikuchi, J. Harada, M. Kawasaki, A. Ohtomo, M. Ohtani, T. Ohnishi, D. Komiyama, H. Koinuma Proc. SPIE 3941, 84-91 (2000).

56. "High-throughput optimizations of alloy and doped films based on ZnO and parallel synthesis of ZnO/MgxZn1-xO quantum wells using combinatorial laser MBE towards ultraviolet laser" A. Ohtomo, T. Makino, K. Tamura, Y. Matsumoto, Y. Matsumoto, Y. Segawa, Z.K. Tang, G.K.L. Wong, H. Koinuma, M. Kawasaki Proc. SPIE 3941, 70-83 (2000).

57. "Optical characterization for combinatorial system based on semiconductor ZnO" T. Makino, G. Isoya, Y. Segawa, C.H. Chia, T. Yasuda, M. Kawasaki, A. Ohtomo, K. Tamura, Y. Matsumoto, H. Koinuma Proc. SPIE 3941, 28-35 (2000).

58. "The use of parallel synthesis and characterization techniques in thin film growth dynamics studies" M. Lippmaa, D. Komiyama, T. Koida, M. Ohtani, A. Ohtomo, T. Fukumura, S. Sasaki, K. Omote, T. Kikuchi, H. Koinuma, M. Kawasaki Proc. 4th Symp. on Atomic-scale Surface and Interface Dynamics 4, 431-436 (2000).

[1999] 59. "Thermal stability of supersaturated MgxZn1-xO alloy films and MgxZn1-xO/ZnO heterointerfaces" A. Ohtomo, R. Shiroki, I. Ohkubo, H. Koinuma, M. Kawasaki Appl. Phys. Lett. 75, 4088-4090 (1999).

60. "An oxide-diluted magnetic semiconductor: Mn-doped ZnO" T. Fukumura; Z.W. Jin, A. Ohtomo, H. Koinuma, M. Kawasaki Appl. Phys. Lett. 75, 3366-3368 (1999).

61. "Single crystalline ZnO films grown on lattice-matched ScAlMgO4(0001) substrates" A. Ohtomo, K. Tamura, K. Saikusa, K. Takahashi, T. Makino, Y. Segawa, H. Koinuma, M. Kawasaki Appl. Phys. Lett. 75, 2635-2637 (1999).

62. "Structure and optical properties of ZnO/Mg0.2Zn0.8O superlattices" A. Ohtomo, M. Kawasaki, I. Ohkubo, H. Koinuma, T. Yasuda, Y. Segawa Appl. Phys. Lett. 75, 980-982 (1999).

63. "Combinatorial laser molecular beam epitaxy (MBE) growth of Mg-Zn-O alloy for band gap engineering" Y. Matsumoto, M. Murakami, Z.W. Jin, A. Ohtomo, M. Lippmaa, M. Kawasaki, H. Koinuma Jpn. J. Appl. Phys. 38, L603-L605 (1999).

64. "In-plane and polar orientations of ZnO thin films grown on atomically flat sapphire" I. Ohkubo, A. Ohtomo; T. Ohnishi; Y. Matsumoto; H. Koinuma; M. Kawasaki Surf. Sci. 443, L1043-L1048 (1999).

65. "Control of the polarity and surface morphology of GaN films deposited on c-plane sapphire" M. Sumiya, T. Ohnishi, M. Tanaka, A. Ohtomo, M. Kawasaki, M. Yoshimoto, H. Koinuma, K. Ohtsuka, S. Fuke MRS Internet J. Nitride Semicond. Res. 4S1, G6.23 (1999).

66. "Temperature dependence of absorption spectra in ZnO thin films on lattice-matched substrates grown with laser molecular beam epitaxy" C.H. Chia, T. Makino. Y. Segawa, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Proc. 10th Meeting on Solid State Photophysics 45 (1999).

67. "Optical spectra of ZnO films on lattice-matched substrates grown with laser-MBE" T. Makino, G. Isoya, Y. Segawa, C.H. Chia, T. Yasuda, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma Abst. Int'l Workshop on ZnO 18 (1999).

68. "ZnO/MgxZn1-xO quantum structures" A. Ohtomo, M. Kawasaki Abst. Int'l Workshop on ZnO 17 (1999).

69. "ZnMnO as novel diluted magnetic semiconductor system" T. Fukumura, Z.W. Jin, A. Ohtomo, H. Koinuma, M. Kawasaki Proc. 3rd Symp. on Atomic-scale Surface and Interface Dynamics 3, 157-160 (1999).

70. "Epitaxial growth of single-crystalline ZnO films towards novel transparent opt-electronics" A. Ohtomo, K. Tamura, K. Saikusa, R. Shiroki, H. Kimura, M. Kawasaki Proc. 3rd Symp. on Atomic-scale Surface and Interface Dynamics 3, 147-150 (1999).

[1998] 71. "Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films" Z.K. Tang, G.K.L. Wong, P. Yu, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa Appl. Phys. Lett. 72, 3270-3272 (1998).

72. "MgxZn1-xO as a II-VI widegap semiconductor alloy" A. Ohtomo, M. Kawasaki, T. Koida, K. Masubuchi, H. Koinuma, Y. Sakurai, Y. Yoshida, T. Yasuda, Y. Segawa Appl. Phys. Lett. 72, 2466-2468 (1998).

73. "Determination of surface polarity of c-axis oriented ZnO films by coaxial impact-collision ion scattering spectroscopy" T. Ohnishi, A. Ohtomo, M. Kawasaki, K. Takahashi, M. Yoshimoto, H. Koinuma Appl. Phys. Lett. 72, 824-826 (1998).

74. "Fabrication of alloys and superlattices based on ZnO towards ultraviolet laser" A. Ohtomo, M. Kawasaki, Y. Sakurai, I. Ohkubo, R. Shiroki, Y. Yoshida, T. Yasuda, Y. Segawa, H. Koinuma Mat. Sci. Eng. B 56, 263-266 (1998).

75. "Coaxial impact-collision ion scattering spectroscopy analysis of ZnO thin films and single crystals" T. Ohnishi, A. Ohtomo, I. Ohkubo, M. Kawasaki, M. Yoshimoto, H. Koinuma Mat. Sci. Eng. B 56, 256-262 (1998).

76. "Excitonic ultraviolet laser emission at room temperature from naturally made cavity in ZnO nanocrystal thin films" M. Kawasaki, A. Ohtomo, I. Ohkubo, H. Koinuma, Z.K. Tang, P. Yu, G.K.L. Wong, B.P. Zhang, Y. Segawa Mat. Sci. Eng. B 56, 239-245 (1998).

77. "Atom technology for Josephson tunnel junctions: SrTiO3 substrate surface" M. Lippmaa, K. Takahashi, A. Ohtomo, S. Ohashi, T. Ohnishi, N. Nakagawa, T. Sato, M. Iwatsuki, H. Koinuma, M. Kawasaki Mat. Sci. Eng. B 56, 111-116 (1998).

78. "Room temperature ultraviolet laser emission from ZnO nanocrystal thin films grown by laser MBE" A. Ohtomo, M. Kawasaki, Y. Sakurai, Y. Yoshida, H. Koinuma, P. Yu, Z.K. Tang, G.K.L. Wong, Y. Segawa Mat. Sci. Eng. B 54, 24-28 (1998).

79. "GaN growth on ozonized sapphire (0001) substrates by MOVPE" T. Honda, A. Inoue, M. Mori, T. Shirasawa, N. Mochida, K. Saotome, T. Sakaguchi, A. Ohtomo, M. Kawasaki, H. Koinuma, F. Koyama, K. Iga J. Cryst. Growth 195, 319-322 (1998).

80. "Room-temperature gain spectra and lasing in microcrystalline ZnO thin films" P. Yu, Z.K. Tang, G.K.L. Wong, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa J. Cryst. Growth 185, 601-604 (1998).

81. "Observation of SrTiO3 step edge dynamics by real-time high-temperature STM" M. Lippmaa, M. Kawasaki, A. Ohtomo, T. Sato, M. Iwatsuki, H. Koinuma Appl. Surf. Sci. 132, 582-586 (1998).

82. "Dimension controlled epitaxy of quantum functional oxide thin films by pulsed-laser processes" H. Koinuma, X.G. Qiu, R. Tsuchiya, N. Kanda, J. Nishino, A. Ohtomo, M. Kawasaki Appl. Surf. Sci. 129, 403-409 (1998).

83. "Excitonic gain and laser emission in ZnO microcrystallites at room temperature" P. Yu, Z.K. Tang, G.K.L. Wong, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa Phys. Low-Dimens. Str. 1-2, 243-251 (1998).

84. "Double heterostructure based on ZnO and MgxZn1-xO" A. Ohtomo, M. Kawasaki, T. Koida, H. Koinuma, Y. Sakurai, Y. Yoshida, M. Sumiya, S. Fuke, T. Yasuda, Y. Segawa Materials Science Forum 264-268, 1463-1466 (1998).

85. "Ultraviolet excitonic laser action at room temperature in ZnO nanocrystalline epitaxial films" M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Sakurai, Y. Yoshida, Z.K. Tang, P. Yu, G.K.L. Wong, Y. Segawa Materials Science Forum 264-268, 1459-1462 (1998).

86. "Lasing of exciton at room temperature in ZnO quantum dots thin films" Y. Segawa, A. Ohtomo, M. Kawasaki, H. Koinuma, Z.K. Tang, P. Yu, G.K. L. Wong RIKEN Review 17, 19-20 (1998).

87. "ZnO quantum structures towards UV diode lasers" M. Kawasaki, A. Ohtomo, R. Shiroki, I. Ohkubo, H. Kimura, G. Isoya, T. Yasuda, Y. Segawa, H. Koinuma Ext. Abst. 1998 Int'l Conf. Sold State Mat. Devices 356-357 (1998).

88. "ZnO alloy system and quantum structures towards ultraviolet laser" A. Ohtomo, I. Ohkubo, M. Kawasaki, H. Koinuma, G. Isoya, T. Yasuda, Y. Segawa Proc. 2nd Int'l Symp. Blue Laser and Light Emitting Diodes 711-714 (1998).

89. "Excitonic ultraviolet laser emission at room temperature from naturally made cavity in ZnO nanocrystalline thin films" A. Ohtomo, I. Ohkubo, H. Koinuma, Z.K. Tang, P. Yu, G.K.L. Wong, B.P. Zhang, Y. Segawa, M. Kawasaki Proc. 2nd Symp. on Atomic-scale Surface and Interface Dynamics 2, 225-231 (1998).

90. "A study of SrTiO3 surface dynamics during wet etching and high-temperature annealing" M. Lippmaa, K. Takahashi, T. Ohnishi, S. Ohashi, N. Nakagawa, A. Ohtomo, T. Sato, M. Iwatsuki, H. Koinuma, M. Kawasaki Proc. 2nd Symp. on Atomic-scale Surface and Interface Dynamics 2, 205-210 (1998).

91. "Alloys and superlattices of ZnO based oxide semiconductors towards ultraviolet emitting devices" M. Kawasaki, A. Ohtomo, R. Shiroki, I. Ohkubo, H. Kimura, G. Isoya, T. Yasuda, Y. Segawa, H. Koinuma Ext. Abst. 17th Electric Materials Symp. 79-80 (1998).

92. "A novel oxide DMS: Mn doped ZnO" T. Fukumura, Z.W. Jin, A. Ohtomo, H. Koinuma, M. Kawasaki Spin-related Phenomena in Semicond. 109 (1998).

[1997] 93. "Growth of ZnO thin film by laser MBE: Lasing of exciton at room temperature" Y. Segawa, A. Ohtomo, M. Kawasaki, H. Koinuma, Z.K. Tang, P. Yu, G.K.L. Wong Phys. Stat. Sol. B 202, 669-672 (1997).

94. "Ultraviolet spontaneous and stimulated emissions from ZnO microcrystallite thin films at room temperature" P. Zu, Z.K. Tang, G.K.L. Wong, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa Solid State Comm. 103, 459-463 (1997).

95. "Laser MBE of ceramic thin films for future electronics" H. Koinuma, N. Kanda, J. Nishino, A. Ohtomo, H. Kubota, M. Kawasaki, M. Yoshimoto Appl. Surf. Sci. 110, 514-519 (1997).

96. "Construction and superfunction of metal-oxide nanostructures and interfaces" M. Kawasaki, R. Tsuchiya, N. Kanda, A. Ohtomo, H. Koinuma Sci. Rep. RITU A44, 207-210 (1997).

97. "Room temperature ultraviolet laser emission from microstructured ZnO thin film" Z.K. Tang, P. Yu, G.K.L. Wong, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa Nonlinear Optics, 18, 355-362 (1997).

98. "Oxide quantum structures for future electro-photonics" M. Kawasaki, A. Ohtomo, R. Tsuchiya, J. Nishino, and H. Koinuma Mat. Res. Soc. Symp. Proc. 474 303-312 (1997).

99. "Transmission electron microscopy study of room temperature lasing epitaxial ZnO films on sapphire N. Wong, K.K. Fung, P. Yu, Z. K. Tang, G.K.L. Wong, A. Ohtomo, M. Kawasaki, H. Koinuma Mat. Res. Soc. Symp. Proc. 482, 423 (1997).

[1996] 100. "Atomic control of SrTiO3 surface for perfect epitaxy of perovskite oxides" M. Kawasaki, A. Ohtomo, T. Arakane, K. Takahashi, M. Yoshimoto, H. Koinuma Appl. Surf. Sci. 107, 102-106 (1996).

101. "Advanced processing and characterization of SrTiO3 single crystals and bicrystals for high-Tc superconducting film substrate" K. Takahashi, A. Ohtomo, M. Kawasaki, H. Koinuma Mat. Sci. Eng. B 41, 152-156 (1996).

102. "Thin film technology directed towards Josephson tunnel junction" M. Kawasaki, N. Kanda, R. Tsuchiya, K. Nakano, A. Ohtomo, K. Takahashi, H. Kubota, T. Shiraishi, H. Koinuma Advances in Superconductivity 8, 1023-1028 (1996).

103. "Room temperature luminescence and stimulated UV emission from ZnO" P. Yu, Z.K. Tang, G.K.L. Wong, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa Proc.23rd Int'l Conf. on Phys. of Semicond. 1453-1456 (1996).

 
【解説】
1) 一格子層の結晶成長から生まれる新しい物理
大友 明、ファン ハロルド
パリティ、印刷中
2) ZnO量子井戸構造の迅速最適化
大友 明、川崎雅司(分担執筆)
コンビナトリアルテクノロジー(丸善)、印刷中
3) バンド絶縁体-モット絶縁体界面の電荷変調と金属伝導
大友 明
日本物理学会誌、58、425-429(2003)
4) ポスドク留学記-科学のびっくり箱 ベル研究所-物理部門-
大友 明
現代化学、385、70-73(2003)
5) 酸化亜鉛紫外レーザー
田村謙太郎、大友 明、川崎雅司
マテリアルインテグレーション、12、9-14(1999)
6) ZnOナノ結晶からの室温励起子レーザー発振
川崎雅司、大友 明
固体物理、33、59-64(1998)
7) 酸化物で紫外線レーザーを創る
大友 明、川崎雅司
パリティ、13、48-52(1998)
【特許リスト】
1) 半導体デバイス
川崎雅司、大野英男、大友 明
特開2000-277534
2) II族−酸化物を含む光半導体素子及びその製造方法
川崎雅司、鯉沼秀臣、大友 明、瀬川勇三郎、安田隆
特開平10-270749
3) II族−酸化物を含む光半導体素子
川崎雅司、鯉沼秀臣、大友 明、瀬川勇三郎、安田隆
特許第3380411号
4) 光半導体素子及びその製造方法
川崎雅司、鯉沼秀臣、大友 明、瀬川勇三郎
特許第2996928号
【国際学会招待講演】
1) "Nanometer-scale interface engineering and electronic properties in perovskite oxide superlattices"
A. Ohtomo, J. Nishimura, M. Kawasaki, D. A. Muller, H. Y. Hwang
15th American Conference on Crystal Growth and Epitaxy, Keystone Colorado, USA, July 20-24, 2003.
2) "Artificial charge and lattice modulation in perovskite titanate superlattices"
A. Ohtomo
Annual APS March Meeting 2002, Indianapolis, USA, March 18-22, 2002.
3) "Novel Semiconductor technologies of ZnO films towards ultraviolet LEDs and invisible FETs"
A. Ohtomo and M. Kawasaki
The 6th Int'l Display Workshop, Sendai, Japan, December 1-4, 1999.
4) "ZnO/MgxZn1-xO Quantum Structures"
A. Ohtomo and M. Kawasaki
International ZnO Workshop, Dayton Ohio, USA, October 7-8, 1999.
 
※「1期生」 = 平成13年度採用研究者 2001年〜2004年
※「2期生」 = 平成14年度採用研究者 2002年〜2005年
※「3期生」 = 平成15年度採用研究者 2003年〜2006年
 
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