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Electronic Properties of Singvle-Crystal Oxide Films Fabricated on Metal Surfaces

Research Project

Project/Area Number 11440090
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅰ(光物性・半導体・誘電体)
Research InstitutionThe University of Electro-Communications

Principal Investigator

MURATA Yoshitada  The Univ. of Electro-Communications, Dept. of Appl. Phys. & Chem., Professor, 電気通信学部, 教授 (10080467)

Co-Investigator(Kenkyū-buntansha) ABE Koji  The Univ. of Electro-Communications, Dept. of Appl. Phys. & Chem., Associate Professor, 電気通信学部, 助教授 (20183139)
YAMADA Chikashi  The Univ. of Electro-Communications, Dept. of Appl. Phys. & Chem., Professor, 電気通信学部, 教授 (70037266)
SHIGENARI Takeshi  The Univ. of Electro-Communications, Dept. of Appl. Phys. & Chem., Professor, 電気通信学部, 教授 (90017335)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥15,900,000 (Direct Cost: ¥15,900,000)
Fiscal Year 2000: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1999: ¥14,300,000 (Direct Cost: ¥14,300,000)
Keywordsα-alumina / β-quartz / single-crystal oxide films / single-crystal metals / band gap narrowing / many-body effect / monolayer film of platinum / grazing incidence X-ray diffraction / アルミナ / シリカ / 単結晶酸化物薄膜 / 層状成長 / 一酸化炭素吸着 / α-Al_2O_3 / β-SiO_2 / 単結晶薄膜 / バンドギャップ / 電子エネルギー損失分光 / 斜入射X線解析 / 生成過程
Research Abstract

High-quality single-crystal films of α-Al_2O_3 9A thick and SiO_2 30 A thick have been fabricated on metal surfaces of Ru(0001) and Ni(111), respectively. α-Al_2O_3 was fabricated by a phase transition from γ- to α-Al_]2O_3 having a commensurate structure with Ru(0001). Atomic hydrogen during initial growth of an amorphous SiO_2 film and ambient oxygen atmosphere during annealing of this film were essential in forming the single-crystal SiO_2 film on Ni(111). An extraordinary result that the band gap for the oxide layer decreases with decreasing oxide thickness was preliminarily observed using scanning tunneling spectroscopy (STS). This result was confirmed by medium-resolution electron energy loss spectroscopy, in. which the oxide thickness V. dependence of the band gap was measured by α-Al_2O_3 films with various oxide thicknesses below 35 A. For growing ultra-thin films of transition metals on a single-crystal oxide, i.e. a wide band gap crystal, we have, utilized the band gap narrowing and succeeded in making a monoatomic layer (ML) of a Pt film on α-Al_2O_3(9 A)/Ru(0001). We have investigated electronic properties of the oxide layer using C-O vibrational frequencies of CO adsorbed on Pt(1 ML)/α-Al_2O_3(9 A)/Ru(0001) measured by reflection absorption infrared spectroscopy. On the other hand, the crystal structure of SiO_2 film thick 40 A was investigated by grazing incidence X-ray diffraction using syncrotron radiation. A nice single crystal film of β-quartz is fabricated with a thickness of 30 A and a polycrystalline Ni silicide film 10 A thick is formed with a mosaic structure at the interface. These single-crystal oxide films on metal surfaces are new surface materials, which will open a window against other fields of solid state physics and chemistry.

Report

(3 results)
  • 2001 Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (34 results)

All Other

All Publications (34 results)

  • [Publications] S.V.Dmitriev: "Simulation of Modulated Structures in Quartz"J. Phys. Soc. Jpn.. 70. 428-436 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Murata: "Electronic Property of Thin Single-Crystal Films of α-Al_2O_3 on Ru(0001)"J. Phys. Soc. Jpn.. 70. 793-796 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] G.Herrmann: "Scattering of Hyperthermal Reactive and Non-reactive Ions from Pt(111)"J. Chem. Phys.. 114. 6861-6868 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Murata: "Layer Growth of Pt on α-Al_2O_3/Ru(OOO1)"Surf. Sci.. 493. 114-119 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] G.Herrmann: "Scattering of Hyperthermal Molecular Ions from Pt(111)"J. Chem. Phys.. 115. 1009-1014 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Kundu: "Growth of Single-crystal SiO_2 Film on Ni(111) Surface"Appl. Phys. Lett.. (印刷中). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 村田好正: "表面の科学-化学反応の物理-"岩波書店. 85 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Moritani, M. Okada, T. Kasai and Y. Murata: "Hydrogen Adsorption and Reaction on the Ir{100}-(1x5) Surface"Surf. Sci.. 445. 315-326 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Okada, K. Moritani, M. Nakamura, T. Kasai and Y. Murata: "Hot-Atom Mechanism in Hydrogen Exchange Reaction on the Ir{100}-(1x5) Surface"Chem. Phys. Lett. 323. 586-593 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Fukutani, Y. Murata, J. Brillo, H. Kuhlenbek, H.-J. Freund and M. Taguchi: "Electronic Structure of a Pt-Ge Surface Alloy"Surf. Sci.. 464. 48-56 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Abe, K. Ishii, M. akajima, H. Fukuda and T. Shigenari: "Raman scattering t the proton phase transition in ice crystal"Ferroelectrics. 239. 1-8 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Shigenari, S.V. Dimitriev, K. Abe, Y. Makita, M. Yajima and T.A. Aslanyan: "A New interpretation of incommensurate phase of quartz"Ferroelectrics. 240. 147-154 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S.V. Dmitriev, M. Yajima, Y. Makita, D. Semagin, K. Abe and T. Shigenari: "Simulation of modulated structures in quartz"J. Phys. Soc. Jpn.. 7u0. 428-436 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Murata, K. Nagata, H. Fujimoto, T. Sakurai, M. Okada and Y. Ebe: "Electronic Property of Thin Single-Crystal Films of α-Al_2O_3 on Ru(0001)"J. Phys. Soc. Jpn.. 7u0. 793-796 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] G. Herrmann, M. Okada and Y. Murata: "Scattering of Hyperthermal Reactive and Non-reactive Ions from Pt(111)"J. Chem. Phys.. 114. 6861-6868 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Murata, M. Kundu, A. Ikeda, H. Fujimoto and M. Matsumoto: "Layer Growth of Pt on α-Al_2_3/Ru(0001)"Surf. Sci.. 493. 114-119 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] G. Herrmann, M. Okada and Y. Murata: "Scattering of Hyperthermal Molecular Ions from Pt(111)"J. Chem. Phys.. 115. 1009-1014 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Moritani, M. Okada, M. Nakamura, T. Kasai and Y. Murata: "Hydrogen-exchange reactions via 'hot' hydrogen atom produced in the dissociation process of molecular hydrogen on Ir{111}"J. Chem. Phys. 70 No.10 (to be published). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Kundu and Y. Murata: "Growth of single-crystal SiO_2 film on Ni(111) surface"Appl. Phys. Lett. (to be published). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Okada: "Hot-Atom Mechanism in Hydrogen Exchange Reaction on the Ir {100} Surface"Chem.Phys.Lett.. 323・5-6. 586-593 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Fukutani: "Electronic Structure of a Pt-Ge Surface Alloy"Surf.Sci.. 464・2-3. 48-56 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Murata: "Electronic Property of Thin Single-Crystal Films of α-Al_2O_3 on Ru (0001)"J.Phys.Soc.Jpn.. 70・3(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] G.Herrmann: "Scattering of Hyperthermal Reactive and Non-reactive Ions from Pt (111)"J.Chem.Phys.. 114・15(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Murata: "Layer Growth of Pt on α-Al_2O_3/Ru (0001)"Surf.Sci.. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.V.Dmitriev: "Simulation of Modulated Structures in Quartz"J.Phys.Soc.Jpn.. 70・1. 428-436 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Murata ed.: "VASSCA-1 Proceedings of the First Vacuum and Surface Science Conference of Asia and Australia"North-Holland. 843 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 村田好正、他: "Hydrogen at Surface and Interface of Metals on Si(111)"Phys.Rev.B. 59. 13020-13025 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 村田好正、他: "Angular Distributions of NO in Laser-Induced Desorption from Pt(111)"Surf.Sci.. 427-428. 27-33 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 村田好正、他: "Hydrogen Adsorption and Reaction on the Ir{100}-(1×5)Surface"Surf.Sci.. 445. 315-326 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 重成武、阿部浩二、他: "Domain Wall Solutions for EHM Model of Crystal"J.Phys.Soc.Jpn.. 68. 227-231 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 重成武、阿部浩二、他: "Characteristics of Incommensurate Modulation in Quartz:"Acta Cryst.A. 55. 65-69 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 重成武、阿部浩二、他: "Detection of Phase Relaxation in Resonance Fluorescence from …"J.Phys.Soc.Jpn.. 68. 71-76 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 村田好正 他: "固体表面と界面の物性"培風館. 166 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 村田好正: "自己組織化プロセス技術"培風館. 250 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2020-05-15  

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