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Development of Urtla-High Vacuum, Low Temperature, High Magnetic Field Scanning Tunneling Microscope.

Research Project

Project/Area Number 10354011
Research Category

Grant-in-Aid for Scientific Research (A).

Allocation TypeSingle-year Grants
Section展開研究
Research Field 機能・物性・材料
Research InstitutionTOKYO INSTITUTE OF TECHNOLOGY

Principal Investigator

ENOKI Toshiaki  Tokyo Institute of Technology, Graduate school of Science and Engineering, Professor, 大学院・理工学研究科, 教授 (10113424)

Co-Investigator(Kenkyū-buntansha) OZAWA Kenichi  Tokyo Institute of Technology, Graduate school of Science and Engineering, Research Associate, 大学院・理工学研究科, 助手 (00282822)
SATO Hirohiko  Tokyo Institute of Technology, Graduate school of Science and Engineering, Research Associate, 大学院・理工学研究科, 助手 (90262261)
EDAMOTO Kazuyuki  Tokyo Institute of Technology, Graduate school of Science and Engineering, Assistant professor, 大学院・理工学研究科, 教授 (80185123)
NAGAMURA Toshihiko  UNISOKU Co. Ltd., President, 開発研究所, 所長
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥35,500,000 (Direct Cost: ¥35,500,000)
Fiscal Year 2000: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1999: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1998: ¥30,400,000 (Direct Cost: ¥30,400,000)
Keywordsultra-high vacuum / low temperature / high magnetic field / STM / tunneling spectroscopy / nano-graphite / fluorinated graphite / local density of states / 走査トンネル顕微鏡 / 表面分析 / グラファイト
Research Abstract

We constructed an ultra-high vacuum, low-temperature scanning tunneling microscope, which could be operated under high magnetic field up to 11T and illumination of light. The lattice images of HOPG were observed at helium temperature under the magnetic field up to 11T.The tunneling spectra showing a CDW gap were successfully obtained for 2H-NbSe_2. However, well reproducible tunneling spectra could not be obtained for graphite. This is considered to be caused by that the spectra depend seriously on the condition of STM tips, producing random fluctuation of tunneling current, which is larger than the current intrinsic to the energy dependence of the density of states. It is necessary to characterize the STM tip condition for obtaining an optimum measurement condition. The improvement of data analysis is also important for obtaining high quality data of tunneling current. The observations of the superconducting gap and vortices are now under way. We tried to observe lattice images of locally fluorinated surface of HOPG and nano-sized graphene sheet on an HOPG substrate. The lattice image of fluorinated HOPG surface consists of fluorinated sites generated by the formation of covalent sp^3-bondings between carbon atoms and introduced fluorine atoms, which are surrounded by the region having a √<3>×√<3> superlattice. The lattice image is compared with that theoretically predicted. Nano-graphene sheet is prepared on an HOPG substrate by a combination of electrophoretic technique and heat treatment using nano-sized diamond particles. STM observations suggest that the prepared nano-graphene have an in-plane size of ca. 10nm and an inter-layer distance of 0.36-0.37nm. The inter-layer distance larger than that of bulk graphite (0.335nm) evidences a considerable reduction of the inter-layer interaction.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (49 results)

All Other

All Publications (49 results)

  • [Publications] Kazuyuki Takai,Hirohiko Sato,Toshiaki Enoki, 他: "Effect of Fluorination on Nano-sized π-electron Systems"J.Phys.Soc.Jpn.. 70・1. 175-185 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Affoune,B.L.V.Prasad,Hirohiko Sato,Toshiaki Enoki: "Electrnophoteric Deposition of Nano-Sized Diamond Particles"Langmuir. 17・2. 547-551 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] B.L.V.Prasad,Hirohiko Sato,Toshiaki Enoki 他: "Heat-Treatment Effect on the Nano-Sized Graphite π-Electron System during Diamond to Graphite Conversion"Phys.Rev.B. 62・16. 11209-11218 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Toshiaki Enoki,Yoshiyuki Shibayama,B.L.V.Prasad,and Hirohiko Sato: "Nano-Graphite and its Intercalation Compounds"Mol.Materials. 13. 31-40 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yoshiyuki Shibayama,Hirohiko Sato,Toshiaki Enoki 他: "Novel Electronic Properties of a Nano-Graphite Disordered Network and Their Iodine Doping Effects"J.Phy.Soc.Jpn.. 69・3. 754-767 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yoshiyuki Shibayama,Hirohiko Sato,Toshiaki Enoki,Morinobu Endo: "Disordered Magnetism at the Metal-Insulator Threshold in Nano-Graphite-Based Carbon Material"Phy.Rev.Lett.. 84・8. 1744-1747 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Morinobu Endo,Toshiaki Enoki,Hiroyoshi Suematsu,and Shoji Yamanaka,Eds.: "Proceedings of the 10^<th> International Symposium on Intercalation Compounds(ISIC10)"Grodon and Breach Science Publishers, New York. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Kobayashi: "Gas Adsorption Effects on Structural and Electrical Properties of Activated Carbon Fibers"J.Chem.Phys.. 109(5). 1983-1990 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] O.E.Andersson: "The Structure and Electronic Properties of Graphite Nano-Particles"Phys. Rev.. B58(24). 16387-16395 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] I.Matthews: "Localized Spins in Partially Carbonized Polyparaphenylene"Phys. Rev.. B60(7). 4749-4757 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Noda: "Oxygen adsorption on a ZrC(111)surface : angle-resolved photoemission study"Surf. Sci.. 450. 27 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shibayama: "Disordered Magnetism at the Metal-Insulator Threshold in Nano-Graphite-Based Carbon Material"Phys. Rev. Letters. 84(8). 1744-1747 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Shibayama: "^<129>I Mossbauer Effect of Iodine Adsorbed in Activated Carbon Fibers"Mol. Cryst. Liq. Cryst.. 340. 301-306 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] B.L.V.Prasad: "Nano-Graphites and Their Potassium Intercalated Compounds : Structural and Electronic Properties"Mol. Cryst. Liq. Cryst.. 340. 793-798 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yoshiyuki Shibayama: "Novel Electronic Properties of a Nano-Graphite Disordered Network and Their Iodine Doping Effects"J.Phys. Soc. Jpn.. 69(3). 754-767 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Enoki: "Nano-Graphite and its Intercalation Compounds"Mol. Materials. 13. 31-40 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] B.L.V.Prasad: "Heat-Treatment Effect on the Nano-Sized Graphite π-Electron System during Diamond to Graphite Conversion"Phys. Rev.. B62(16). 11209-11218 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Affoune: "Electrnophoteric Deposition of Nano-Sized Diamond Particles"Langmuir. 17(2). 547-551 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Takai: "Effect of Fluorination on Nano-sized π-electron Systems"J.Phys. Soc. Jpn.. 70(1). 175-185 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Enoki: "Magnetism of Nano-Graphite and Its Assembly"Polyhedrons. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Endo, T.Enoki, H.Suematsu, and S.Yamanaka, Ed.: "Proceedings of the 10^<th> International Symposium on Intercalation Compounds(ISIC10)"Grodon and Breach Science Publishers, New York. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kazuyuki Takai,Hirohiko Sato,Toshiaki Enoki, 他: "Effect of Fluorination on Nano-sized π-electron Systems"J.Phys.Soc.Jpn.. 70・1. 175-185 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Affoune,B.L.V.Prasad,Hirohiko Sato,Toshiaki Enoki: "Electrnophoteric Deposition of Nano-Sized Diamond Particles"Langmuir. 17・2. 547-551 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] B.L.V.Prasad,Hirohiko Sato,Toshiaki Enoki 他: "Heat-Treatment Effect on the Nano-Sized Graphite π-Electron System during Diamond to Graphite Conversion"Phys.Rev.B. 62・16. 11209-11218 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Toshiaki Enoki,Yoshiyuki Shibayama,B.L.V. Prasad, and Hirohiko Sato: "Nano-Graphite and its Intercalation Compounds"Mol.Materials. 13. 31-40 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yoshiyuki Shibayama,Hirohiko Sato,Toshiaki Enoki 他: "Novel Electronic Properties of a Nano-Graphite Disordered Network and Their Iodine Doping Effects"J.Phys.Soc.Jpn.. 69・3. 754-767 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yoshiyuki Shibayama,Hirohiko Sato,Toshiaki Enoki,Morinobu Endo: "Disordered Magnetism at the Metal-Insulator Threshold in Nano-Graphite-Based Carbon Material"Phys.Rev.Lett.. 84・8. 1744-1747 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Morinobu Endo,Toshiaki Enoki,Hiroyoshi Suematsu,and Shoji Yamanaka,Eds.: "Proceedings of the 10^<th> International Symposium on Intercalation Compounds (ISIC10)"Grodon and Breach Science Publishers, New York. (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] I.Matthews: "Localized Spins in Partially Carbonized Polyparaphenylene"Phys. Rev.. B60. 4749-4757 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Toshiaki Enoki: "Electronic and Magnetic Properties of Nano-Graphite"Proceedings of Applied Diamond Conference/Frontier Carbon Technology Joint Conference,Tsukuba. 213-218 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Toshiaki Enoki: "Host-Guest Systems in Micorporous Carbons"Materials Research Society Proceedings, "Solid State Ionics". 1 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yoshiyuki Shibayama: "Disordered Magnetism at the Metal-Insulator Thereshold in Nano-Graphite-Based Carbon Material"Phys. Rev. Letters. 84・8. 1744-1747 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Hirohiko Sato: "Dimensional Crossover and Angular Dependent Magnetoresistance of Magnetic Graphite Intercalation Compounds; MCI_2GIC's (M=Cu and Co)"J. Phys. Soc. Jpn.. 69(In press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yoshiyuki Shibayama: "Novel Electronic Properties of a Nano-Graphite Disordered Network and Their Iodine Doping Effects"J. Phys. Soc. Jpn.. 69(In press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] B.L.V.Prasad: "Nano-Graphites and Their Potassium Intercalated Compounds: Structural and Electronic Properties"Mol. Cryst. Liq. Cryst. (In press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Hirohiko Sato: "Anomalous Angular Dependence of Magnetoresistance in MCI_2-GIC's (M=Cu and Co)"Mol. Cryst. Liq. Cryst. (In press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yoshiyuki Shibayama: "I^<129> Mossbauer Effect of Iodine Adsorbed in Activated Carbon Fibers"Mol. Cryst. Liq. Cryst. (In press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] **tsuko S.Suzuki: "Successive Magnetic Phase Transitions of Cu_CCo_<1-C>Cl_2-FeCl_3 Graphite Intercalation Compounds"Mol. Cryst. Liq. Cryst. (In press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kazuyuki Takai: "Fluorine-Introduced sp^3-Carbon Sites in a Nano-Sized p-Electron System and Their Effects on the Electronic Properties"Mol. Cryst. Liq. Cryst. (In press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Toshiaki Enoki: "Nano-Graphite and its Intercalation Compounds"Proceedings of 4^<th> Biennial International Workshop in Russia, Fullerenes and Atomic Clusters, St. Petersburg. (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 榎敏明: "新しく炭素材料実験を始める人のために-炭素材料の化学と電子スピン共鳴" 炭素. 181. 44-46 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 榎敏明: "炭素同素体の電子物性と表面" ニューダイヤモンド. 50. 8-12 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tetsuo Yamashita: "The Contribution of Intercalate to the Electronic Structure and Transport Properties for Potassium-Oaygen-Graphite Intercalation Compounds" Mol.Cryst.Liq.Cryst. 310. 243-248 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] odd.E.Andersson: "The c-anis Magnetoregistance and Thermoelectric Power of Cu Cl_2 Graphite Intercalation Compounds" Mol.Cryst.Liq.Cryst. 310. 249-254 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yoshiyuki Shibayama: "Magnetic Properties of Activated Carbon Fibers and Their Iodine doping Effect" Mol.Cryst.Liq.Cryst. 310. 273-278 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Norikazu Kobayashi: "Gas Adsorption Effects on Structural and Electrical Properties of Activated Carbon Fibers" J.Chem.Phys. 109(5). 1983-1990 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] odd.E.Andersson: "The Structure and Electronic Properties of Graphite Nano-particles" Phys.Rev.B. 58(24). 16387-16395 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshiaki Enoki: "Thermal and Mechanical Properties" Springer-verlag, 225-240 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshiaki Enoki: "Novel Carbon-Based Host-Euest Systems" Springer-verlag, 137-146 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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