Isao Ohkubo

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Name
Isao Ohkubo
E-mail
OHKUBO.Isaonims.go.jp
Affiliation
National Institute for Materials Science
Research funding number
20376487

Research Areas

 
 

Awards & Honors

 
Mar 2018
2017年 Outstanding Reviewer, Royal Society of Chemistry (RSC; 英国王立化学会), Physical Chemistry Chemical Physics (PCCP)
 
Sep 2008
機能性酸化物薄膜を用いた新しいデバイスへの展開, 所長賞, 東京工業大学応用セラミックス研究所
 
Mar 1997
常盤賞, 常盤工業会
 

Published Papers

 
Thermoelectric materials and applications for energy harvesting power generation
I. Petsagkourakis, K. Tybrandt, X. Crispin, I. Ohkubo, N. Satoh, and T. Mori
Sci. Technol. Adv. Mater.   19(1) 836-862   2018   [Refereed]
Rapid deposition and thermoelectric properties of ytterbium boride thin films using hybrid physical chemical vapor deposition
G. Guélou, M. Martirossyan, K. Ogata, I. Ohkubo, Y. Kakefuda, N. Kawamoto, Y. Kitagawa, J. Ueda, S. Tanabe, K. Maeda, K. Nakamura, T. Aizawa, and T. Mori,
Materialia   1 244-248   2018   [Refereed]
Thermoelectric properties of boron carbide/HfB2 composites
J-L. Innocent, D. Portehault, G. Gouget, S. Maruyama, I. Ohkubo, and T. Mori
Mater Renew Sustain Energy   6(2) 6:6   2017   [Refereed]
Comparative study of exchange correlation functional and potential for evaluating thermoelectric transport properties in d0 perovskite oxides
I. Ohkubo (corresponding author), and T. Mori
J. Phys. Soc. Jpn.   86 074705-1-074705-7   2017   [Refereed]
Anisotropic thermoelectric properties in layered complex nitrides with alpha-NaFeO2-type structure
I. Ohkubo (corresponding author), and T. Mori
APL Mater.   4 104808-1-104808-1   2016   [Refereed][Invited]
Deposition of thermoelectric strontium hexaboride thin films by a low pressure CVD method
T. Tynell, T. Aizawa, I. Ohkubo, K. Nakamura, and T. Mori
J. Cryst. Growth   449 10-14   2016   [Refereed]
ZrC epitaxy on Si(111)
T. Aizawa, S. Otani, I. Ohkubo, and T. Mori
J. Vac. Sci. Technol. A   33 061512-1-061512-5   2015   [Refereed]
A-site-driven ferroelectricity in strained ferromagnetic La2NiMnO6 thin films
R. Takahashi, I. Ohkubo, K. Yamauchi, M. Kitamura, Y. Sakurai, M. Oshima, T. Oguchi, Y. Cho, and M. Lippmaa
Phys. Rev. B   91 134107-1-134107-9   2015   [Refereed]
Origin of projected excellent thermoelectric transport properties in d0-electron AMN2 (A = Sr or Ba; M = Ti, Zr, Hf) layered complex metal nitrides
I. Ohkubo (corresponding author) and T. Mori
Eur. J. Inorg. Chem.   3715-3722   2015   [Refereed]
Anisotropic anomalies of thermoelectric transport properties and electronic structures in layered complex nitrides AMN2 (A = Na, Cu; M = Ta, Nb)
3.I. Ohkubo (corresponding author), and T. Mori
Chem. Mater.   27 7265-7275   2015   [Refereed]
Two-dimensional layered complex nitrides as a new class of thermoelectric materials
I. Ohkubo (corresponding author) and T. Mori
Chem. Mater.   26 2532-2536   2014   [Refereed]
Three-dimensionality of electronic structures and thermoelectric transport in SrZrN2 and SrHfN2 layered complex metal nitrides
I. Ohkubo (corresponding author) and T. Mori
Inorg. Chem.   53 8979-8984   2014   [Refereed]
Infrared anomalous Hall effect in CaxSr1−xRuO3 films
M.-H. Kim, T. Tanaka, C. T. Ellis, A. Mukherjee, G. Acbas, I. Ohkubo, H. Christen, D. Mandrus, H. Kontani, and J. Cerne
Phys. Rev. B   88 155101-1-155101-7   2013   [Refereed]
Seebeck coefficient and electrical resistivity of single crystal B12As2 at high temperatures
C. Frye, J. Edgar, I. Ohkubo, and T. Mori
J. Phys. Soc. Jpn.   82 095001-1-095001-2   2013   [Refereed]
Large tunnel magnetoresistance in epitaxial oxide spin-filter tunnel junctions
T. Harada, I. Ohkubo (corresponding author), M. Lippmaa, Y. Sakurai, Y. Matsumoto, S. Muto, H. Koinuma, and M. Oshima
Advanced Functional Materials   22 4471-4475   2012   [Refereed]
Spin-filter tunnel junction with matched Fermi surfaces
T. Harada, I. Ohkubo (corresponding author), M. Lippmaa, Y. Sakurai, Y. Matsumoto, S. Muto, H. Koinuma, and M. Oshima
Phys. Rev. Lett.   109 076602-1-076602-5   2012   [Refereed]
Chemical trend of Fermi-level shift in transition metal-doped TiO2 films
Y. Matsumoto, M. Katayama, T. Abe, T. Ohsawa, I. Ohkubo, H. Kumigashira, M. Oshima and H. Koinuma
J. Ceram. Soc. Jpn.   118 993-996   2011   [Refereed]
Modulation of the ferromagnetic insulating phase in Pr0.8Ca0.2MnO3 by Co substitution
T. Harada, I. Ohkubo (corresponding author), M. Lippmaa, Y. Matsumoto, M. Sumiya, H. Koinuma, and M. Oshima
Phys. Status Solidi (RRL) – Rapid Research Letters   5 34-36   2011   [Refereed]
Characterization of ferromagnetism around interfaces by rear-incident magneto-optic Kerr effect
K. Tsubouchi, I. Ohkubo (corresponding author), and M. Oshima
Phys. Status Solidi (a)   208 900-903   2011   [Refereed]
Formation of transition layers at metal/perovskite oxide interfaces showing resistive switching behaviors
T. Yamamoto, R. Yasuhara, I. Ohkubo, H. Kumigashira, and M. Oshima
J. Appl. Phys.   110 053707-1-053707-7   2011   [Refereed]
Influence of substrates on epitaxial growth of B-site-ordered perovskite La2NiMnO6 thin films
Y. Sakurai, I. Ohkubo (corresponding author), Y. Matsumoto, H. Koinuma, and M. Oshima
J. Appl. Phys.   110 063913-1-063913-3   2011   [Refereed]
Device size dependence of resistance switching performance in metal / manganite / metal trilayers
G. Sugano, I. Ohkubo (corresponding author), T. Harada, T. Ohnishi, M. Lippmaa, Y. Matsumoto, H. Koinuma, and M. Oshima
Mat. Sci. Eng. B   173 36-39   2010   [Refereed]
Infrared anomalous Hall effect in SrRuO3: Exploring evidence for crossover to intrinsic behavior
M.-H. Kim, G. Acbas, M.-H. Yang, M. Eginligi, P. Khalifah, I. Ohkubo, H. Christen, D. Mandrus, Z. Fang, and J. Cerne
Phys. Rev. B   81 235218-1-235218-9   2010   [Refereed]
Interfacial chemical states of resistance-switching metal/Pr0.7Ca0.3MnO3 interfaces
R. Yasuhara, I. Ohkubo, H. Kumigashira, and M. Oshima
Appl. Phys. Lett.   97 132111-1-132111-3   2010   [Refereed]
Ferromagnetic properties of epitaxial La2NiMnO6 thin films grown by pulsed laser deposition
M. Kitamura, I. Ohkubo (corresponding author), Y. Matsumoto, H. Koinuma, and M. Oshima
Appl. Phys. Lett.   94 132506-1-132506-3   2009   [Refereed]
Dependence of magnetic properties on laser ablation conditions for epitaxial La0.6Sr0.4MnO3 thin films grown by pulsed laser deposition
T. Harada, I. Ohkubo (corresponding author), and M. Oshima
Materials Transactions   50 1081-1084   2009   [Refereed]
Electronic structure characterization of La2NiMnO6 epitaxial thin films using synchrotron-radiation photoelectron spectroscopy and optical spectroscopy
M. Kitamura, I. Ohkubo (corresponding author), M. Matsunami, K. Horiba, H. Kumigashira, Y. Matsumoto, H. Koinuma, and M. Oshima
Appl. Phys. Lett.   94 262503-1-262503-3   2009   [Refereed]
Modification of reflection high energy electron diffraction system for in–situ monitoring of oxide epitaxy at high oxygen pressure
K. Tsubouchi, I. Ohkubo (corresponding author), T. Harada, H. Kumigashira, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, and M. Oshima
Mat. Sci. Eng. B   148 16-18   2008   [Refereed]
Electrode dependence and film resistivity effect in the electric-field induced resistance-switching phenomena in epitaxial NiO films
T. Ishihara, I. Ohkubo (corresponding author), K. Tsubouchi, H. Kumigashira, U. S. Joshi, Y. Matsumoto, H. Koinuma, and M. Oshima
Mat. Sci. Eng. B   148 42-44   2008   [Refereed]
Field-induced resistance switching at metal / perovskite manganese oxide interface
I. Ohkubo (corresponding author), K. Tsubouchi, T. Harada, H. Kumigashira, K. Itaka, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, and M. Oshima
Mat. Sci. Eng. B   148 13-15   2008   [Refereed]
In-situ photoemission study of Pr1-xCaxMnO3 epitaxial thin films with suppressed charge fluctuations
H. Wadati, A. Maekawa, A. Chikamatsu, I. Ohkubo, H. Kumigashira, M. Oshima, A. Fujimori, M. Lippmaa, M. Kawasaki, and H. Koinuma
Phys. Rev. Lett.   100 026402-1-026402-4   2008   [Refereed]
Interfacial electronic structure of SrTiO3/SrRuO3 heterojuctions studied by in situ photoemission spectroscopy
H. Kumigashira, M. Minohara, M. Takizawa, A. Fujimori, D. Toyota, I. Ohkubo, M. Oshima, M. Lippmaa, and M. Kawasaki
Appl. Phys. Lett.   92 122105-1-122105-3   2008   [Refereed]
Trap-controlled space-charge-limited current mechanism in resistance switching at Al/Pr0.7Ca0.3MnO3
T. Harada, I. Ohkubo (corresponding author), K. Tsubouchi, H. Kumigashira, T. Ohnishi, M. Lippmaa, Y. Matsumoto, H. Koinuma, and M. Oshima
Appl. Phys. Lett.   92 222113-1-222113-3   2008   [Refereed]
Epitaxial growth and surface metallic nature of LaNiO3 thin films
K. Tsubouchi, I. Ohkubo (corresponding author), H. Kumigashira, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, and M. Oshima
Appl. Phys. Lett.   92 262109-1-262109-3   2008   [Refereed]
Transport and magnetic properties of Pr1-xCaxMnO3 epitaxial films grown on LaAlO3 substrates
A. Maniwa, K. Okano, I. Ohkubo, H. Kumigashira, M. Oshima, M. Lippmaa, M. Kawasaki, and H. Koinuma
J. Magn. Magn. Mater.   310 2237-2238   2007   [Refereed]
In-situ photoemission study of Pr1−xCaxMnO3 epitaxial thin films
H. Wadati, A. Maniwa, I. Ohkubo, H. Kumigashira, A. Fujimori, M. Oshima, M. Lippmaa, M. Kawasaki, and H. Koinuma
J. Magn. Magn. Matar.   310 963-965   2007   [Refereed]
Band diagrams of spin tunneling junctions La0.6Sr0.4MnO3/Nb:SrTiO3 and SrRuO3/Nb:SrTiO3 determined by in-situ photoemission spectroscopy
M. Minohara, I. Ohkubo, H. Kumigashira, and M. Oshima
Appl. Phys. Lett.   90 132123-1-132123-3   2007   [Refereed]
High–throughput characterization of metal electrode performance for electric–field–induced resistance switching in metal–Pr0.7Ca0.3MnO3–metal structures
K. Tsubouchi, I. Ohkubo (corresponding author), H. Kumigashira, M. Oshima, Y. Matsumoto, K. Itaka, and H. Koinuma
Advanced Materials   19 1711-1713   2007   [Refereed]
Determination of the infrared complex magneto-conductivity tensor in itinerant ferromagnets from Faraday and Kerr measurements
M.-H. Kim, G. Acbas, M.-H. Yang, I. Ohkubo, H. M. Christen, D. Mandrus, M. A. Scarpulla, O. D. Dubon, Z. Schlesinger, P. Khalifah, and J. Cerne
Phys. Rev. B   76 214416-1-214416-11   2007   [Refereed]
Composition dependence of the anomalous Hall effect in CaxSr1-xRuO3 films
P. Khalifah, I. Ohkubo, B. C. Sales, H. M. Christen, D. Mandrus, and J. Cerne
Phys. Rev. B   76 054404-1-054404-11   2007   [Refereed]
Ferromagnetism stabilization of ultrathin SrRuO3 films: Thickness-dependent physical properties
D. Toyota, I. Ohkubo, H. Kumigashira, M. Oshima, T. Ohnishi, M. Lippmaa, M. Kawasaki, and H. Koinuma
J. Appl. Phys.   99 08N505-1-08N505-3   2006   [Refereed]
Dielectric and optical properties of epitaxial rare-earth scandate films and their crystallization behavior
H. M. Christen, G. E. Jellison, Jr., I. Ohkubo, S. Huang and M. E. Reeves, E. Cicerrella J. L. Freeouf, Y. Jia, and D. G. Schlom
Appl. Phys. Lett.   88 262906-262908   2006   [Refereed]
Epitaxial ScAlMgO4(0001) films grown on sapphire substrates by flux-mediated epitaxy
T. Obata R. Takahashi, I. Ohkubo, M. Oshima, K. Nakajima, T. Chikyow, H. Koinuma, and Y. Matsumoto
Appl. Phys. Lett.   89 191910-1-191910-3   2006   [Refereed]
Thickness dependent electronic structure for SrRuO3 ultrathin films studied by in-situ photoemission spectroscopy
D. Toyota, I. Ohkubo, H. Kumigashira, M. Oshima, M. Takizawa, A. Fujimori, T. Ohnishi, M. Lippmaa, K. Ono, M. Kawasaki, and H. Koinuma
Appl. Phys. Lett.   87 162508-162510   2005   [Refereed]
High c-oriented RuSr2(Eu1.5Ce0.5)Cu2O10-delta thin film growth by pulsed laser deposition and subsequent post-annealing
W. Q. Lu, Y. Yamamoto, I. Ohkubo, V. V. Petrykin, M. Kakihana, Y. Matsumoto, and H. Koinuma
Physica C   403 21-24   2004   [Refereed]
A laser-deposition approach to compositional-spread discovery of materials on conventional sample sizes
H. M. Christen, I. Ohkubo, C. M. Rouleau, G. E. Jellison Jr., A.A. Puretzky, D. B. Geohegan, and D.H. Lowndes
Meas. Sci. Technol.   15 1-11   2004   [Refereed]
Continuous composition spread thin films of transition metal oxides by pulsed laser deposition
I. Ohkubo (corresponding author), H. M. Christen, C. M. Rouleau, H. Y. Zhai, H. N. Lee, S. Sathyamurthy, and D. H. Lowndes
Appl. Surf. Sci.   223 35-38   2004   [Refereed]
High-throughput growth temperature optimization of ferroelectric SrxBa1-xNb2O6 epitaxial thin films using a temperature gradient method
I. Ohkubo (corresponding author), H. M. Christen, S. V. Kalinin, G. E. Jellison, Jr., C. M. Rouleau, and D. H. Lowndes
Appl. Phys. Lett.   84 1350-1352   2004   [Refereed]
Evolution of transport and magnetic properties near the ferromagnetic quantum critical point in the series CaxSr1-xRuO3
P. Khalifah, I. Ohkubo, H. M. Christen, and D. G. Mandrus
Phys. Rev. B   70 134426-1-134426-6   2004   [Refereed]
Simultaneous Z-contrast and phase contrast imaging of oxygen in ceramic interfaces
F. Chisholm, A. R. Lupini, S. J. Pennycook, I. Ohkubo, H. M. Christen, S. M. Findlay, M. P. Oxley, and L.J. Allen
Microsc. Microanal.   10 256-257   2004   [Refereed]
Heteroepitaxial growth of beta-LiGaO2 thin films on ZnO
I. Ohkubo, C. Hirose, K. Tamura, H. Saito, H. Koinuma, P. Ahemt, T. Chikyow, T. Ishii, S. Miyazawa ,Y. Segawa, T. Fukumura, and M. Kawasaki
J. Appl. Phys. 92, 5587~5589 (2003).   92 5587-5589   2003   [Refereed]
Synthesis of epitaxial Y-type magnetoplumbite thin films by quick optimization with combinatorial pulsed laser deposition
I. Ohkubo (corresponding author), Y. Matsumoto, K. Ueno, T. Chikyow, M. Kawasaki, and H. Koinuma
J. Cryst. Growth 247, 105~109 (2003).   247 105-109   2003   [Refereed]
Fabrication of spin-frustrated Sm2Mo2O7 epitaxial films: High throughput optimization using a temperature gradient method
J. Nishimura, T. Fukumura, M. Ohtani, Y. Taguchi, M. Kawasaki, I. Ohkubo, H. Koinuma, H. Ohguchi, K. Ono, M. Oshima, and Y. Tokura
Appl. Phys. Lett.   82 1571-1573   2003   [Refereed]
High mobility thin film transistors with transparent ZnO channels
J. Nishii, F. M. Hossain, S. Takagi, T. Aita, K. Saikusa, Y. Ohmaki, I. Ohkubo, S. Kishimoto, A. Ohtomo, T. Fukumura, F. Matsukura, Y. Ohno, H. Koinuma, H. Ohno, and M. Kawasaki
Jpn. J. Appl. Phys.   42 L347-L349   2003   [Refereed]
An improved continuous compositional-spread technique based on pulsed-laser deposition and applicable to large substrate areas
H. M. Christen, C. M. Rouleau, I. Ohkubo, H. Y. Zhai, H. N. Lee, S. Sathyamurthy, and D. H. Lowndes
Rev. Sci. Instrum.   74 4058-4062   2003   [Refereed]
Quick optimization of Y-type magnetoplumbite thin films growth by combinatorial pulsed laser deposition technique
I. Ohkubo (corresponding author), Y. Matsumoto, K. Itaka, T. Hasegawa, K. Ueno, M. Ohtani, M. Kawasaki, and H. Koinuma
Appl. Surf. Sci.   197-198 312-315   2002   [Refereed]
Pulsed laser epitaxy and magnetic properties of single phase Y type magnetoplumbite thin films
I. Ohkubo (corresponding author), Y. Matsumoto, T. Hasegawa, K. Ueno, K. Itaka, P. Ahemet, T. Chikyow, M. Kawasaki, and H. Koinuma
Jpn. J. Appl. Phys.   40 L1343-L1345   2001   [Refereed]
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, and M. Kawasaki
Appl. Surf. Sci.   159 514-519   2000   [Refereed]
Analysis of the polar direction of GaN film growth by coaxial impact collision ion scattering spectroscopy
M. Sumiya, M. Tanaka, K. Ohtsuka, S. Fuke, T. Ohnishi, I. Ohkubo, M. Kawasaki, M. Yoshimoto, and H. Koinuma
Appl. Phys. Lett.   75 674-676   1999   [Refereed]
Structure and optical properties of ZnO/Mg0.2Zn0.8O superlattices
A. Ohtomo, M. Kawasaki, I. Ohkubo, H. Koinuma, T. Yasuda, and Y. Segawa
Appl. Phys. Lett.   75 980-982   1999   [Refereed]
Thermal stability of supersaturated MgxZn1-xO alloy films and MgxZn1-xO/ZnO heterointerfaces
A. Ohtomo, R. Shiroki, I. Ohkubo, H. Koinuma, and M. Kawasaki
Appl. Phys. Lett.   75 4088-4090   1999   [Refereed]
In-plane and polar orientations of ZnO thin films grown on atomically flat sapphire
I. Ohkubo, A. Ohtomo, T. Ohnishi, Y. Matsumoto, H. Koinuma, and M. Kawasaki
Surf. Sci.   443 L1043-L1048   1999   [Refereed]
Coaxial impact-collision ion scattering spectroscopy analysis of ZnO thin films and single crystals
T. Ohnishi, A. Ohtomo, I. Ohkubo, M. Kawasaki, M. Yoshimoto, and H. Koinuma
Mat. Sci. Eng. B   56 256-262   1998   [Refereed]

Books etc

 
パルレーザ堆積(レーザアブレーション)法. 21世紀版 薄膜作製応用ハンドブック
大久保勇男、鯉沼秀臣 (Part:Contributor, 第2編 p325-p338)
(エヌ・ティー・エス 2003)   2003   

Conference Activities & Talks

 
Development of unexplored materials accelerated by first-principle calculations and informatics.
Isao Ohkubo and Takao Mori
The 10th International Workshop on Combinatorial Materials Science and Technology (COMBI2018)   5 Oct 2018   
Origin of anomalous anisotropic thermoelectric transport properties in alpha-NaFeO2-type d0-layered complex nitrides
Isao Ohkubo and Takao Mori
37th International Conference on Thermoelectrics (ICT2018)   2 Jul 2018   
第一原理計算・インフォマティクス主導による新窒化物材料の開発 [Invited]
Isao Ohkubo
日本学術振興会「先端ナノデバイス・材料テクノロジー第151委員会」   8 Jun 2018   
Density functional theory approach for developing novel nitride thermoelectric [Invited]
Isao Ohkubo and Takao Mori
NIMS-UR1-Saint-Gobain 2018 workshop   27 Mar 2018   
Prediction of thermoelectric transport properties in layered complex nitrides
Isao Ohkubo and Takao Mori
The Minerals, Metals & Materials Society(TMS) 147th Annual Meeting & Exhibition   14 Mar 2018   
交換相関汎関数/ポテンシャルの熱電輸送係数計算への影響 :d0電子系ペロブスカイト酸化物の例
大久保 勇男, 森 孝雄
第14回日本熱電学会学術講演会(TSJ2017)   11 Sep 2017   
d0電子系ペロブスカイト酸化物の熱電輸送特性計算における交換相関汎関数/ポテンシャル依存
大久保 勇男, 森 孝雄
第78回応用物理学会 秋季学術講演会   5 Sep 2017   
第一原理計算による層状窒化物半導体の格子熱伝導率の予測
浦宏行, 明石遼介, 只野 央将, 大久保 勇男, 常行真司
日本物理学会 2017年秋季大会   Sep 2017   
Theoretical approach for developing novel nitride thermoelectrics
Isao Ohkubo and Takao Mori
IUMRS-ICAM 2017   31 Aug 2017   
CVD Fabrication of Yb Boride Thin Films
T. Aizawa, I. Ohkubo, K. Ogata, Y.Kakefuda, N. Kawamoto, K. Nakamura, T. Mori
IUMRS-ICAM 2017   Aug 2017   
Exchange-correlation functional and potential influences on thermoelectric transport in d0 perovskite oxides
Isao Ohkubo and Takao Mori
36th Annual International Conference on Thermoelectrics(ICT2017)   31 Jul 2017   
第一原理計算を用いた未開拓物質群の熱電変換機能開拓 [Invited]
Isao Ohkubo
高分子学会 17-1 印刷・情報記録・電子用材料研究会   7 Jun 2017   
Cultivation of Unexplored Materials Accelerated by First-Principle Calculations and Materials Informatics
Isao Ohkubo and Takao Mori
MANA International Symposium 2017   1 Mar 2017   
Ybホウ化物薄膜のCVD成長
相澤 俊, 大久保 勇男, 尾形 和雄, 中村勝光, 森 孝雄
第11回日本ホウ素・ホウ化物研究会   25 Feb 2017   
Exploring thermoelectric transport properties of layered complex nitrides using density-functional theory calculation [Invited]
Isao Ohkubo
Mini-Workshop on Thermoelectrics and Mixed Anion Compounds   20 Feb 2017   
デラフォサイト型窒化物CuMN2(M=Ta, Nb)の電子状態と熱電輸送特性
大久保 勇男, 森 孝雄
第77回応用物理学会秋季学術講演会   15 Sep 2016   
層状窒化物AMN2(A=Na,Cu; M=Ta,Nb)の電子状態と異常な熱電輸送特性
大久保 勇男, 森 孝雄
第13回 日本熱電学会学術講演会(TSJ2016)   6 Sep 2016   
第一原理計算を用いた未開拓物質群の開拓 [Invited]
Isao Ohkubo
東京工業大学 フロンティア材料研究所 第9回材料構造講演会   19 Jul 2016   
TiN/MgO界面近傍における熱伝導評価
掛札 洋平, 川本 直幸, 山田 勇, 大久保 勇男, 広瀬賢二, 三留 正則, 森 孝雄, ゴルバーグ デミトリ, 板東 義雄
日本顕微鏡学会第72回学術講演会.   Jun 2016   
Anomalous anisotropic thermoelectric transport properties and electronic structures in layered complex nitrides AMN2 (A = Na, Cu; M = Ta, Nb)
Isao Ohkubo and Takao Mori
The 35th International Conference on Thermoelectrics (ICT2016)   29 May 2016   
第一原理計算を用いた物性予測 -新物質開拓の高効率化を目指して-. [Invited]
Isao Ohkubo
日本学術振興会マイクロビームアナリシス第141委員会 第164回研究会   24 May 2016   
層状窒化物NaMN2(M=Ta, Nb)の電子状態と熱電輸送特性の次元性
大久保 勇男, 森 孝雄
2016年 第63回応用物理学会春季学術講演会   21 Mar 2016   
Dimensionality of thermoelectric transport and electronic structures in layered complex nitrides
Isao Ohkubo and Takao Mori
PacifiChem 2015   20 Dec 2015   
第一原理計算を用いた新物質開拓と物性予測 [Invited]
Isao Ohkubo
東京工業大学 応用セラミックス研究所 第5回 材料構造講演会   26 Oct 2015   
Attractive Thermoelectric Transport Properties and Electronic Structures in d0-Electron Layered Complex Nitrides
Isao Ohkubo and Takao Mori
The 9th International Conference on the Science and Technology for Advanced Ceramics (STAC-9)   19 Oct 2015   
Attractive prospects for layered complex nitrides as thermoelectric materials
Isao Ohkubo and Takao Mori
34th Annual International Conference on Thermoelectrics   2 Jul 2015   
Layered complex nitrides as a new class of thermoelectric materials
Isao Ohkubo and Takao Mori
The 11th International Nanotechnology Conference on Communication and Cooperation (INC11)   11 May 2015   
層状窒化物SrMN2(M=Zr, Hf)の電子状態と熱電輸送特性の3次元性
大久保 勇男, 森 孝雄
第62回応用物理学会春季学術講演会   13 Mar 2015   
Two-dimensional layered nitrides as a new class of thermoelectric materials [Invited]
Isao Ohkubo and Takao Mori
2015 Symposium for the Promotion of Applied Research Collaboration in Asia (SPARCA 2015)   10 Feb 2015   
Two-dimensional Layered Complex Metal Nitrides: A New Class of Thermoelectric Materials
Isao Ohkubo
The Collaborative Conference on Crystal Growth (3CG 2014)   5 Nov 2014   
ZrC epitaxy on Si(111)
Isao Ohkubo
The 7th international symposium on surface science (ISSS-7)   Nov 2014   
2次元窒化物AMN2の電子状態と熱電変換輸送特性
大久保 勇男, 森 孝雄
応用物理学会2014秋季学術講演会   18 Sep 2014   
電子状態計算による層状窒化物SrTiN2の熱電輸送特性の予測
大久保 勇男, 森 孝雄
第11回日本熱電学会学術講演会   18 Sep 2014   
第一原理計算を用いた物性予測 -新物質開拓のハイスループット化を目指して- [Invited]
Isao Ohkubo
独)日本学術振興会、先端ナノデバイス・材料テクノロジー第151委員会   23 Jul 2014   
Two-dimensional electronic structure and anisotropic thermoelectric transport in layered complex nitride SrTiN2
Isao Ohkubo and Takao Mori
The 8th International Conference on the Science and Technology for Advanced Ceramics (STAC-8)   25 Jun 2014   
Thermoelectric transport and electronic structure of a two-dimensional layered complex nitride SrTiN2
Isao Ohkubo and Takao Mori
The 2014 International Conference on Thermoelectrics (ICT2014))   9 Jun 2014   
Nanoscale material design and synthesis toward novel thermoelectric materials
Isao Ohkubo and Takao Mori
The 10th International Nanotechnology Conference on Communication and Cooperation (INC10)   14 May 2014   
電子状態計算によるSrTiN2層状金属窒化物の熱電変換性能の検討
大久保 勇男, 森 孝雄
2014年 第61回 応用物理学会春季学術講演会   18 Mar 2014   
The 32nd International Conference on Thermoelectrics (ICT2013)
I. Ohkubo, T. Aizawa, and T. Mori
Molecular beam epitaxy toward the exploration of high efficient thermoelectric materials   Jul 2013   
Epitaxial growth of complex oxides toward novel spintronics devices [Invited]
Isao Ohkubo
2012 Collaborative Conference on Crystal Growth (3CG)   13 Dec 2012   
酸化物スピンフィルタートンネル接合素子の開発 [Invited]
Isao Ohkubo
第44回 化合物新磁性材料研究会   21 Jun 2012   
機能元素により動作するナノ電子デバイスの作製
Isao Ohkubo
機能元素のナノ材料科学 最終成果報告会   8 Jun 2012   

Patents

 
特願2018-104963 : 有機金属分子線エピタキシー方法及び装置
Isao Ohkubo
特願2008-151016 : 記憶素子
大久保勇男, 山本剛久, 尾嶋正治, 組頭広志, 原田尚之, 菅野弦哉, リップマーミック, 大西 剛, 片山正夫, 鯉沼秀臣, 松本祐司
特開2003-081692 : 酸化物絶縁体材料およびその形成方法並びに半導体素子
川崎雅司, 大久保勇男, 齊藤 肇
特開2002-308695 : フェロックスプレ-ナ薄膜の製造方法及びインダクタ
鯉沼秀臣, 川崎雅司, 松本祐司, 大久保勇男, 上之康一郎
特開2002-075731 : Y型マグネトプラムバイト薄膜及びその製造方法並びにY型マグネトプラムバイト薄膜を使用した薄膜インダクタ
鯉沼秀臣, 川崎雅司, 松本祐司, 大久保勇男