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研究成果


2012年成果リスト

Original Articles

  1. Strong correlation between oxygen donor and near-surface electron accumulation in undoped and Mg-doped In-polar InN films
    A. Yang, Y. Yamashita, T. Yamaguchi, M. Imura, M. Kaneko, O. Sakata, Y. Nanishi, and K. Kobayashi
    Applied Physics Express 5, 031002 (2012).
  2. A new factor affecting the performance of dye-sensitized solar cells in the presence of 4-tert-butylpyridine
    K. Zhang, S. Zhang, K. Sodeyama, X. Yang, H. Chen, M. Yanagida, Y. Tateyama, and L. Han
    Applied Physics Express 5, 042303 (2012).
  3. Bulk electronic structure of the dilute magnetic semiconductor Ga1-xMnxAs via hard x-ray angle-resolved photoemission
    A. X. Gray, J. Minar, S. Ueda, P. R. Stone, Y. Yamashita, J. Fujii, J. Braun, L. Plucinski, C. M. Schneider, G. Panaccione, H. Ebert, O. D. Dubon, K. Kobayashi, and C. S. Fadley
    Nature Materials 11, 957-962 (2012).
  4. One-step route to a hybrid TiO2/TixW1?xN nanocomposite by in situ selective carbothermal nitridation
    Z. Schnepp, M. J. Hollamby, M. Tanaka, Y. Matsushita, Y. Katsuya, and Y. Sakka
    Science and Technology of Advanced Materials 13, 035001 (2012).
  5. Hydroxylated surface of GaAs as a scaffold for heterogeneous Pd catalyst
    N. Nishiwaki, T. Konishi, S. Hirao, Y. Yamashita, H. Yoshikawa, and M. Shimoda
    Physical Chemistry Chemical Physics 14, 1424-1430 (2012).
  6. Crystal structures and properties of perovskites ScCrO3 and InCrO3 with small ions at the A site
    A. A. Belik, Y. Matsushita, M. Tanaka, and E. Takayama-Muromachi
    Chemistry of Materials 24, 2197-2203 (2012).
  7. Post-synthesis dispersion of metal nanoparticles by poly(amidoamine) dendrimers: size-selective inclusion, water solubilization, and improved catalytic performance
    G. Saravanan, H. Abe, T. Hara, H. Yoshikawa, Y. Yamashita, S. Ueda, and K. Kobayashi
    Chemical Communications 48, 7441-7443 (2012).
  8. High-pressure synthesis, crystal structure, and electromagnetic properties of CdRh2O4: an analogous oxide of the postspinel mineral MgAl2O4
    X. Wang, Y. Guo, Y. Shi, A. A. Belik, Y. Tsujimoto, W. Yi, Y. Sun, Y. Shirako, M. Arai, M. Akaogi, Y. Matsushita and K. Yamaura
    Inorganic Chemistry 51, 6868-6875 (2012).
  9. High-pressure synthesis, crystal structure, and properties of BiPd2O4 with Pd2+ and Pd4+ ordering and PbPd2O4
    W. Yi, Y. Matsushita, M. Tanaka, and A. Belik
    Inorganic Chemistry 51, 7650-7656 (2012).
  10. Oxyhydrides of (Ca,Sr,Ba)TiO3 perovskite solid solutions
    T. Sakaguchi, Y. Kobayashi, T. Yajima, M. Ohkura, C. Tassel, F. Takeiri, S. Mitsuoka, H. Ohkubo, T. Yamamoto, J. Kim, N. Tsuji, A. Fujihara, Y. Matsushita, J. Hester, M. Avdeev, K. Ohoyama, and H. Kageyama
    Inorganic Chemistry 51, 11371-11376 (2012).
  11. Crystal structure, magnetic and transport properties of layered cobalt oxyfluorides, Sr2CoO3+xF1-x (0 ? x ? 0.15)
    Y. Tsujimoto, C. Sathish, K.-P. Hong, K. Oka, M. Azuma, Y. Guo, Y. Matsushita, K. Yamaura, and E. Takayama-Muromachi
    Inorganic Chemistry 51, 4802-4809 (2012).
  12. Chiral phenylazomethine cage
    R. Shomura, S. Higashibayashi, H. Sakurai, Y. Matsushita, A. Sato, and M. Higuchi
    Tetrahedron Letters 53, 783-785 (2012).
  13. Probing the Ba 5d states in BaTiO3 and BaSO4: A resonant x-ray emission study at the Ba-L3 edge
    K. Yoshii, I. Jarrige, C. Suzuki, D. Matsumura, Y. Yoneda, T. Fukuda, K. Tamura, Y. Ito, T. Mukoyama, T. Tochio, H. Shinotsuka, and S. Fukushima
    Journal of Physics and Chemistry of Solids 73, 1106-1110 (2012).
  14. Superconductivity in BaTi2Sb2O with a d1 square lattice
    T. Yajima, K. Nakano, F. Takeiri, T. Ono, Y. Hosokoshi, Y. Matsushita, J. Hester, Y. Kobayashi, and H. Kageyama
    Journal of the Physical Society of Japan 81, 103706 (2012).
  15. Filling-controlled Mott transition in W-doped VO2
    H. Takami, T. Kanki, S. Ueda, K. Kobayashi, and H. Tanaka
    Physical Review B 85, 205111 (2012).
  16. Electronic structure and optical, mechanical, and transport properties of the pure, electron-doped, and hole-doped Heusler compound CoTiSb
    S. Ouardi, G. H. Fecher, C. Felser, M. Schwall, S. S. Naghavi, A. Gloskovskii, B. Balke, J. Hamrle, K. Postava, J. Pistora, S. Ueda, and K. Kobayashi
    Physical Review B 86, 045116 (2012).
  17. Electronic structure of Kondo lattice compounds YbNi3X9 (X = Al, Ga) studied by hard x-ray spectroscopy
    Y. Utsumi, H. Sato, S. Ohara, T. Yamashita, K. Mimura, S. Motonami, K. Shimada, S. Ueda, K. Kobayashi, H. Yamaoka, N. Tsujii, N. Hiraoka, H. Namatame, and M. Taniguchi
    Physical Review B 86, 115114 (2012).
  18. Continuous critical temperature enhancement with gradual hydrogen doping in LaFeAsO0.85Hx (x=0-0.85)
    Y. Guo, X. Wang, J. Li, Y. Sun, Y. Tsujimoto, A. A. Belik, Y. Matsushita, K. Yamaura, and E. Takayama-Muromachi
    Physical Review B 86, 054523 (2012).
  19. Solidification of tin on quasicrystalline surfaces
    A. Singh, H. Somekawa, Y. Matsushita and A. P. Tsai
    Philosophical Magazine 92, 1106-1128 (2012).
  20. Bias application hard x-ray photoelectron spectroscopy study of forming process of Cu/HfO2/Pt resistive random access memory Structure
    T. Nagata, M. Haemori, Y. Yamashita, H. Yoshikawa, Y. Iwashita, K. Kobayashi, and T. Chikyow
    Applied Physics Letters 99, 223517 (2012).
  21. Electronic structure of delta-doped La:SrTiO3 layers by hard x-ray photoelectron spectroscopy
    A. M. Kaiser, A. X. Gray, G. Cont, B. Jalan, A. P. Kajdos, A. Gloskovskii, S. Ueda, Y. Yamashita, K. Kobayashi, W. Drube, S. Stemmer, and C. S. Fadley
    Applied Physics Letters 100, 261603 (2012).
  22. Band bending and surface defects in β-Ga2O3
    T. C. Lovejoy, R. Chen, S. Zheng, E. G. Villora, K. Shimamura, H. Yoshikawa, Y. Yamashita, S. Ueda, K. Kobayashi, S. Dunham, F. Ohuchi, and M.A. Olmstead
    Applied Physics Letters 100, 181602 (2012).
  23. Polarity-dependent photoemission spectra of wurtzite-type zinc oxide
    J. Williams, H. Yoshikawa, S. Ueda, Y. Yamashita, K. Kobayashi, Y. Adachi, H. Haneda, T. Ohgaki, H. Miyazaki, T. Ishigaki, and N. Ohashi
    Applied Physics Letters 100, 051902 (2012).
  24. Resistive switching phenomenon driven by antiferromagnetic phase separation in an antiperovskite nitride Mn3ZnN
    Y. S. Sun, Y. F. Guo, X. X. Wang, Y. Tsujimoto, Y. Matsushita, Y. G. Shi, C. Wang, A. A. Belik, and K. Yamaura
    Applied Physics Letters 100, 161907 (2012).
  25. Observation of boron diffusion in an annealed Ta/CoFeB/MgO magnetic tunnel junction with standing-wave hard X-ray photoemission
    A. A. Greer, A. X. Gray, S. Kanai, A. M. Kaiser, S. Ueda, Y. Yamashita, C. Bordel, G. Palsson, N. Maejima, S. -H. Yang, G. Conti, K. Kobayashi, S. Ikeda, F. Matsukura, H. Ohno, C. M. Schneider, J. B. Kortright, F. Hellman, and C. S. Fadley
    Applied Physics Letters 101, 202402 (2012).
  26. Determination of Schottky barrier profile at Pt/SrTiO3:Nb junction by x-ray photoemission
    N. Ohashi, H. Yoshikawa, Y. Yamashita, S. Ueda, J. Li, H. Okushi, K. Kobayashi, and H. Haneda
    Applied Physics Letters 101, 251911 (2012).
  27. Hard x-ray photoelectron spectroscopy study on band alignment at poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/ ZnO interface
    T. Nagata, S. Oh, Y. Yamashita, H. Yoshikawa, R. Hayakawa, K. Kobayashi, T. Chikyow, Y. Wakayama
    Applied Physics Letters 101, 173303 (2012).
  28. Electronic structure changes across the magnetic transition in FeRh via hard x-ray photoemission
    A. X. Gray, D. Cooke, P. Kruger, C. Bordel, A. M. Kaiser, S. Moyerman, E. E. Fullerton, S. Ueda, Y. Yamashita, A. Gloskovskii, C. M. Schneider, W. Drube, K. Kobayashi, F. Hellman, and C. S. Fadley
    Physical Review Letters 108, 257208 (2012).
  29. Observation and simulation of hard x ray photoelectron diffraction to determine polarity of polycrystalline zinc oxide films with rotation domains
    J. Williams, I Pis, M. Kobata, A. Winkelmann, T. Matsushita, Y. Adachi, N. Ohashi, and K. Kobayashi
    Journal of Applied Physics 111, 033525 (2012).
  30. Sulfur-Mediated Palladium Catalyst Immobilized on a GaAs Surface
    M. Shimoda, T. Konishi, N. Nishiwaki, Y. Yamashita, H. Yoshikawa
    Journal of Applied Physics 111, 124908 (2012).
  31. Nondestructive characterization of a TiN metal gate: chemical and structural properties by means of standing-wave hard x-ray photoemission spectroscopy
    C. Papp, G. Conti, B. Balke, S. Ueda, Y. Yamashita, H. Yoshikawa, Y. S. Uritsky, K. Kobayashi, and C. S. Fadley
    Journal of Applied Physics 112, 114501 (2012).
  32. Negative spin polarization at the Fermi level in Fe4N epitaxial films by spin-resolved photoelectron spectroscopy
    K. Ito, K. Okamoto, K. Harada, T. Sanai, K. Toko, S. Ueda, Y. Imai, T. Okuda, K. Miyamoto, A. Kimura, T. Suemasu
    Journal of Applied Physics 112, 013911 (2012).
  33. Band alignment of InGaZnO4/Si interface by hard x-ray photoelectron spectroscopy
    K. Lee, K. Nomura, H. Yanagi, T. Kamiya, E. Ikenaga, T. Sugiyama, K. Kobayashi, and H. Hosono
    Journal of Applied Physics 112, 033713 (2012).
  34. Effect of near atmospheric pressure nitrogen plasma treatment on Pt/ZnO interface
    T. Nagata, Y. Yamashita, H. Yoshikawa, K. Kobayashi, M. Haemori, T. Chikyow
    Journal of Applied Physics 112, 116104 (2012).
  35. Synchrotron x-ray, photoluminescence, and quantum chemistry studies of bismuth-embedded dehydrated zeolite Y
    H. T. Sun, Y. Matsushita, Y. Sakka, N. Shirahata, M. Tanaka, Y. Katsuya, H. Gao, and K. Kobayashi
    Journal of the American Chemical Society 134, 2918-2921 (2012).
  36. Manganese valence and coordination structurein Mn, Mg-codoped γ-AlON green phosphor
    T. Takeda, R.J. Xie, N. Hirosaki, Y. Matsushita, and T. Homma
    Journal of Solid State Chemistry 194, 71-75 (2012).
  37. Superconducting and structural properties of δ-MoC0.681 cubic molybdenum carbide phase
    C. I. Sathish, Y. Guo, Xia Wang, Y. Tsujimoto, J. Li, S. Zhang, Y. Matsushita, Y. Shi, H. Tian, H. Yang, J. Li, and K.Yamaura
    Journal of Solid State Chemistry 196, 579-585 (2012).
  38. Electrical conductivity and x-ray diffraction analysis of oxyapatite-type lanthanum silicate and neodymium silicate solid solution
    K. Kobayashi, Y. Matsushita, M. Tanaka, Y. Katsuya, C. Nishimura, and Y. Sakka
    Solid State Ionics 225, 443-447 (2012).
  39. Wet chemical synthesis of Ni-Al nanoparticles at ambient condition
    N. A. Fadil, S. Govindachetty, H. Yoshikawa, Y. Yamashita, S. Ueda, K. Kobayashi, T. Tanabe, T. Hara, G. V. Ramesh, H. Murakami, K. Noda, and H. Abe
    Advanced Materials Research 557-559, 442-447 (2012).

Proceedings

1.         Modulation of metal-insulator transition temperature in W-doped VO2 thin films: toward Mott devices
H. Takami, K. Kawatani, T. Kanki, S. Ueda, K.Kobayashi, and H. Tanaka
World Journal of Engineering 3, 1091-1092 (2012).
2.         粉末回折法によるアミノ酸およびオリゴペプチドの環境変化に伴う構造変化の解析
清谷多美子, 菅原洋子
Photon Factory Activity Report 2011 #29 (2012) B, 57 (2012).
3.         Current Status and Future Challenge of Oxide Semiconductors
H. Hosono
The Proceedings of AM-FPD 12 , 1-4 (2012).
 

Review Articles/Books

1.         Oxyfluoride chemistry of layered perovskyte compounds
Y. Tsujimoto, K. Yamaura, and E. Takayama-Muromachi
Applied Sciences 2, 206-219 (2012).
2.         Observation of filament formation process of Cu/HfO2/Pt ReRAM structure by hard x-ray photoelectron spectroscopy under bias operation
T. Nagata, M. Haemori, Y. Yamashita, H. Yoshikawa, K. Kobayashi, and T. Chikyow
Journal of Materials Research 28, 869-878 (2012).
3.         放射光X線回折および電子顕微鏡分析
中村智樹, 田中雅彦
日本放射光学会誌 25, 336-341 (2012).

Conference Presentations, Awards, Doctoral Dissertations, and Patents

Please see the pdf for Conference Presentations, Awards, Doctoral Dissertations, and Patents

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