分子-電極ナノコンタクト系の軟X線発光と超高分解能光電子分光

2005 Fiscal Year Annual Research Report

• Project/Area Number: 17069008
• Research Institution: The University of Tokyo
• Principal Investigator: 辛 埴 東京大学, 物性研究所, 教授 (00162785)
• Co-Investigator(Kenkyū-buntansha): 高田 恭孝 独立行政法人理化学研究所, 播磨研究所・放射光物性研究室, 先任研究員 (90261122)
• Keywords: 軟X線発光 / 軟X線吸収 / 光電子分光 / シンクロトロン放射光 / 表面吸着 / 化学結合

Research Abstract

H17年度の研究実績は、(1)東大・物性研で行っている真空紫外超高分解能光電子分光研究と、(2)SPring-8の理研で行っている軟X線分光研究がある。(1)については0.1meVの超高分解能光電子分光システムの建設を行うべく、レーザー等の光学系の発注、整備、真空系の発注、整備を行った。光電子分光器については、スウェーデンの業者と共同開発をし、80meVの分解能を持つものを設計、共同開発をした。光源系に関してはエタロンを用いて、50meVの発振幅を持つものを開発した。これらのものはH18年度にその性能を評価する予定である。
(2)については、SPring-8の共用ビームラインBL27SUにおいて既設の固体表面軟X線分光装置を理研専用ビームラインBL27SUに移設する準備を行った。ビームライン光学系(分光器・集光鏡)の立ち上げ・調整を進めるとともに、高精度で調整が必要な測定装置の位置調整架台を設計・製作した。また、装置移設後に、窒素原子で修飾した銅(100)表面上に作成したコバルトナノドットの電子状態を光電子分光によって研究することを計画しており、試料作成の予備実験を行いその方法を確立した(東大・小森研との共同研究)。さらに移設を始める前に、BL27SUにおいてシリコン(100)(111)表面の酸化膜および酸窒化膜について、酸素1sおよび窒素1s内殻吸収と軟X線発光分光を組み合わせた測定を行うことで元素選択的かつ化学状態選択的に界面の価電子帯電子構造を明らかにした(東大・吉信研との共同研究)。

Research Products

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  • Author(s): Y.Hijikata, H.Yguchi, S.Yoshida, Y.Takata, K.Kobayashi, S.Shin, H.Nohira, T.Hattori
  • Journal Title: Materials Science Forum 483-485 Pages: 585-588
• [Journal Article] Electronic Structure of Protonic Conductor SrTi_<0.98>Sc_<0.02>O_3 probed by soft X-ray spectroscopy (2005)
  • Author(s): T.Higuchi, S.Yamaguchi, S.Shin, T.Hattori, T.Tsukamoto
  • Journal Title: Jpn.J.Appl.Phys. 44 Pages: 285-286
• [Journal Article] Photoemission Spectroscopic Evidence of Gap Anisotropy in an f-Electron Superconductor (2005)
  • Author(s): T.Kiss, F.Kanetaka, T.Yokoya, T.Shimojima K.Kanai, S.Shin Y.Onuki, T.Togashi, C.Zhang, C.T.Chen, S.Watanabe
  • Journal Title: Phys.Rev.Lett. 94 Pages: 57001-57004
• [Journal Article] Determination of electron escape depth in ultrathin silicon oxide (2005)
  • Author(s): H.Nohira, H.Okamoto, K.Azuma, Y.Nakata, E.Ikenaga, Y.Takata, S.Shin, T.Hattori
  • Journal Title: Appl.Phys.Lett. 86 Pages: 81911-81913
• [Journal Article] Iron Nanoparticles in Amorphous SiO_2:X-ray Emission and Absorption Spectra (2005)
  • Author(s): E.Z.Kurmaev, D.A.Zatsepin, S.O.Cholakh, B.Schmidt, Y.Harada, T.Tokushima, H.Osawa, S.Shin, T.Takeuchi
  • Journal Title: Physics of the Solid State 47 Pages: 754-757
• [Journal Article] Role of charge-density-wave fluctuations on the spectral function in a metallic charge-density-wave system (2005)
  • Author(s): T.Yokoya, T.Kiss, A.Chainani, S.Shin, K.Yamaya
  • Journal Title: Phys.Rev.B 71 Pages: 140504-140507
• [Journal Article] Local bonding structure in mechanically activated TiH2 and TiH2 + graphite mixture (2005)
  • Author(s): E.Z.Kurmaev, O.Morozov, T.I.Khomenko, Ch.Borchers, S.N.Nemnonov, Y.Harada, T.Tokushima, H.Osawa, T.Takeuchi, S.Shin
  • Journal Title: Journal of Alloys and Compounds 395 Pages: 240-246
• [Journal Article] Direct observation of a neutral Mn acceptor in Ga_<1-x>Mn_xAs by resonant x-ray emission spectroscopy (2005)
  • Author(s): Y.Ihiwata, T.Takeuchi, R.Eguchi, M.Watanabe, Y.Harada, K.Kanai, A.Chanani, M.Taguchi, S.Shin, M.C.Debnath, I.Souma, Y.OKa, T.Hayashi, Y.Hashimoto, S.Katsumoto, Y.Iye
  • Journal Title: Phys.Rev.B 71 Pages: 121202(R)-121205(R)
• [Journal Article] Angle-resolved XPS studies on transition layers at SiO_2/Si interface (2005)
  • Author(s): T.Hattori, K.Azuma, Y.Nakata, H.Nohira, H.Okamoto, E.Ikenaga, K.Kobayashi, Y.Takata, S.Shin
  • Journal Title: Journal of Electron Spectroscopy and Related Phenomena 144-147 Pages: 457-460
• [Journal Article] Ultrahigh-resolution Photoemission Spectroscopy of superconductors using a VUV laser (2005)
  • Author(s): T.Kiss, T.Shimojima, N.Kanetaka, K.Kanai, T.Yokoya, S.Shin, Y.Onuki, T.Togashi, C.Q.Zhang, C.T.Chen, S.Watanabe
  • Journal Title: Journal of Electron Spectroscopy and Related Phenomena 144-147 Pages: 953-956
• [Journal Article] Interface reaction of poly-Si/high-k insulator systems studied by hard X-ray photoemission spectroscopy (2005)
  • Author(s): E.Ikenaga, I.Hirosawa, A.Kitano, Y.Takata, A.Muro, T.Maeda, K.Torri, H.Kitajima, M.Awaji, K.Tamasaku, T.Ishikawa, S.Komiya, K.Kobayashi
  • Journal Title: Journal of Electron Spectroscopy and Related Phenomena 144-147 Pages: 491-494
• [Journal Article] Electronic structure of the Ga_<1-X>Cr_XN studied by high-energy photoemission spectroscopy (2005)
  • Author(s): J.J.Kim, H.Makino, T.Yao, Y.Takata, K.Kobayashi, T.Yamamoto, T.Hanada, M.W.Cho, E.Ikenaga, D.Miwa, Y.Nishino, K.Tamasaku, T.Ishikawa, S.Shin
  • Journal Title: Journal of Electron Spectroscopy and Related Phenomena 144-147 Pages: 561-564
• [Journal Article] Bulk screening in core-level photoemission from Mott-Hubbard and charge-transfer systems (2005)
  • Author(s): M.Taguchi, A.Chanani, N.Kamakura K.Horiba, Y.Takata, M.Yabashi, K.Tamasaku, Y.Nishino, D.Miwa, T.Ishikawa, S.Shin, E.Ikenaga, T.Yokoya, K.Kobayashi, I.Mochiku, H.Hirata, K.Motoya
  • Journal Title: Phys.Rev.B 71 Pages: 155102-155106
• [Journal Article] Contribution of electronic structure to thermoelectric power in (Bi,Pb)_2(Sr,La)_2CuO_<6+δ> (2005)
  • Author(s): T.Kondo, T.Takeuchi, U.Mizutani, T.Yokoya, S.Tsuda, S.Shin
  • Journal Title: Phys.Rev.B 72 Pages: 024533-024541
• [Journal Article] Hole-concentration dependence of electrical resistivity in the (Bi,Pb)_2(Sr,La)_2CuO_<6+δ> quantitative evaluation with angle-resolved photoemission spectroscopy (2005)
  • Author(s): T.kondo, T.Takeuchi, T.Yokoya, S.Tsuda, S.Shin, U.Mizutani
  • Journal Title: Journal of Electron Spectroscopy and Related Phenomena 144-147 Pages: 1249-1252
• [Journal Article] Role of Ag doping in Ba_8Si_<46> compounds (2005)
  • Author(s): N.Kamakura, T.Nakano, Y.Ikemoto, M.Usuda, H.Fukuoka, S.Yamanaka, S.Shin, K.Kobayashi
  • Journal Title: Phys.Rev.B 72 Pages: 014511-014516
• [Journal Article] Laser-excited ultrahigh-resolution photoemission spectroscopy of Na_xCoO_2 ・yH_2O: Evidence for pseudogap formation (2005)
  • Author(s): T.Shimojima, T.Yokoya, T.Kiss, A.Chainani, S.Shin, T.Togashi, S.Watanabe, C.Zhang, C.T.Chen, K.Takada, T.Sadsaki, H.Sakurai, E.Takayama-Muromachi
  • Journal Title: Phys.Rev.B 71 Pages: 020505(R)-020508(R)
• [Journal Article] Intermolecular Interaction by Apical Oxygen in Titanyl Phthalocyanine (2005)
  • Author(s): Y.Harada, T.Tokushima, Y.Takata, N.Kamakura, T.Takeuchi, K.Kobayashi, Y.Shirota, S.Shin
  • Journal Title: Jpn.J.Appl.Phys. 44 Pages: L1147-L1149
• [Journal Article] Angle-resolved photoemission study of K_<0.3>MoO_3: direct observation of temperature-dependent Fermi surface across the Peierls transition (2005)
  • Author(s): H.Ando, T.Yokoya, K.Ishizaka, S.Tsuda, T.Kiss, S.Shin, T.Eguchi, M.Hohara, H.Takagi
  • Journal Title: J.Phys.: Condens.Matter 17 Pages: 4935-4940
• [Journal Article] Hard-X-ray photoelectron spectroscopy of Na_xCoO_2・yH_2O (2005)
  • Author(s): A.Chainani, T.Yokoya, Y.Takata, K.Tamasaku, M.Taguchi, T.Shimojima, N.Kanakura, K.Horiba, S.Tsuda, S.Shin, D.Miwa, Y.Nishino, T.Ishikawa, M.Yabashi, K.Kobayashi, H.Namatame, M.Taniguchi, K.Takada, T.Sasaki, H.Sakurai, E.Takayama-Muromachi
  • Journal Title: Nuclear Instruments and Methods in Physics Research A 547 Pages: 163-168
• [Journal Article] Development of hard X-ray photoelectron spectroscopy at BL29XU in Spring-8 (2005)
  • Author(s): Y.Takata, M.Yabashi, K.Tamasaku, Y.Nishino, D.Miwa, T.Ishikawa, E.Ikenaga, K.Horiba, S.Shin, M.Arita, K.Shimada, H.Namatame, M.Taniguchi, H.Nohira, T.Hattori, S.Sodergren, B.Wannberg, K.Kobayashi
  • Journal Title: Nuclear Instruments and Methods in Physics Research A 547 Pages: 50-55
• [Journal Article] Carbon-substitution dependent multiple superconducting gap of MgB_2:A sub-meV resolution photoemission study (2005)
  • Author(s): S.Tsuda, T.Yokoya, T.Kiss, T.Shimojima, S.Shin, T.Togashi, S.Watanabe, C.Zhan, C.T.Chen, S.Lee, H.Uchiyama, S.Tajima, N.Nakai, K.Machida
  • Journal Title: Phys.Rev.B 72 Pages: 064527-064531
• [Journal Article] Temperature-dependent Eu 3d-4f x-ray absorption and resonant photoemission study of the valence transition in EuNi_2(Si_<0.2>Ge_<0.8>)_2 (2005)
  • Author(s): K.Yamamoto, K.Horiba, M.Taguchi, M.Matsunami, N.Kamakura, A.Chainani, Y.Takata, K.Miura, M.Shiga, H.Wada, Y.Senba, H.Ohashi, S.Shin
  • Journal Title: Phys.Rev.B 72 Pages: 161101(R)-161104(R)
• [Journal Article] Ion irradiation induced reduction of Fe^<3+> to Fe^<2+> and Fe^0 in triethoxysilane films (2005)
  • Author(s): R.G.Wilks, E.Z.Kurmaev, J.C.Pivin, A.Hunt, M.V.Yablonskikh, D.A.Zatsepin, A.Moewes, S.Shin, P.Palade, G.Principi
  • Journal Title: J.Phys. : Condens.Matter 17 Pages: 7023-7028
• [Journal Article] Evidence for Suppressed Screening on the Surface of High Temperature La_<2-x>Sr_xCuO_4 and Nd_<2-x>Ce_xCuO_4 Superconductors (2005)
  • Author(s): M.Taguchi, A.Chainani, K.Horiba, Y.Takata, M.Yabashi, K.Tamasaku, Y.Nishino, D.Miwa, T.Ishikawa, T.Takeuchi, K.Yamamoto, M.Matsunami, S.Shin, T.Yokoya, E.Ikenaga, K.Kobayashi, T.Mochiku, K.Hirata, J.Hori, K.Ishii, F.Nakamura, T.Suzuki
  • Journal Title: Phys.Rev.Lett. 95 Pages: 177002-177055
• [Journal Article] Electronic structure of protonic conductor SrZr_<0.90>M_<0.10>O_3 (M=Y^<3+>,Sc^<3+>) probed by soft-X-ray spectroscopy (2005)
  • Author(s): T.Higuchi, T.Tsukamoto, H.Matsumoto, T.Shimura, K.Yashiro, T.Kawada, J.Mizusaki, S.Shin, T.Hattori
  • Journal Title: Solid State Ionics 176 Pages: 2435-2438
• [Journal Article] Temperature-Dependent Luttinger Surfaces (2005)
  • Author(s): T.Ito, A.Chainani, T.Haruna, K.Kanai, T.Yokoya, S.Shin, R.Kato
  • Journal Title: Phys.Rev.Lett. 95 Pages: 246402-246405
• [Journal Article] Electronic Structure in Valence Band of Nd-Substituted Bi_4Ti_3O_<12> Single Crystal Probed by Soft-X-Ray Emission Spectroscopy (2005)
  • Author(s): T.Higuchi, Y.Noguchi, T.Goto, M.Miyayama, S.Shin, K.Kaneda, T.Hattori, T.Tsukamoto
  • Journal Title: Jpn.J.Appl.Phys. 44 Pages: L1491-L1493
• [Journal Article] Photocarrier-injected electronic structure of VO_2/TiO_2:Nb (2005)
  • Author(s): R.Eguchi, S.Shin, A.Fukusihima, T.Kiss, T.Shimojima, Y.Muraoka, Z.Hiroi
  • Journal Title: Applied.Phys.Lett. 87 Pages: 211912-211914
• [Journal Article] Electronic structure of proton conducting SrCeO_3-SrZrO_3 thin films (2005)
  • Author(s): T.Higuchi, T.Tsukamoto, N.Sata, S.Yamaguchi, S.Shin, T.Hattori
  • Journal Title: State Ionics 176 Pages: 2963-2996
• [Journal Article] Electronic structure of proton conducting BaCe_<0.90>Y_<0.10>O_<3-δ> (2005)
  • Author(s): T.Higuchi, T.Tsukamoto, H.Matsumoto, T.Shimura, K.Yashiro, T.Kawada, J.Mizusaki, S.Shin, T.Hattori
  • Journal Title: Solid State Ionics 176 Pages: 2967-2970
• [Journal Article] Ultraviolet laser photoemission spectroscopy of FeSi: Observation of a opening in density of states (2005)
  • Author(s): K.Ishizaka, T.Kiss, T.Shimojima, T.Yokoya, T.Togashi, S.Watanabe, C.Q.Zhang, C.Chen, Y.Onose, Y.Tokura, S.Shin
  • Journal Title: Phys.Rev.B 72 Pages: 233202-233205
• [Journal Article] レーザー光電子分光:超高分解能とその応用 (2005)
  • Author(s): 木須孝幸, 富樫格, 辛埴, 渡部俊太郎
  • Journal Title: 固体物理 40 Pages: 353-361
• [Journal Article] ペロブスカイト型プロトン導電体の分光学的解析 (2005)
  • Author(s): 樋口透, 塚本桓世, 山口周, 辛埴, 服部武志
  • Journal Title: 月刊マテリアルインテグレーション 18 Pages: 28-36
• [Journal Article] 軟X線吸収発光分光法によるSiO_2/Si界面電子状態のサイト選択的観測 (2005)
  • Author(s): 山下良之, 山本達, 向井孝三, 吉信淳, 原田慈久, 徳島高, 高田恭孝, 辛埴, 赤木和人, 常行真司
  • Journal Title: 表面科学 26 Pages: 514-517