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Microscopic Tunneling Properties of Exotic Surfaces

Research Project

Project/Area Number 13640327
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

YAMAGUCHI Tsuyoshi  Shizuoka University, Center for Instrumental Analysis, Professor, 機器分析センター, 教授 (50013537)

Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2003: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2002: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2001: ¥800,000 (Direct Cost: ¥800,000)
KeywordsFirst-Principle Calculation / Electronic State / Fullerene / Carbon-Nanotube / Scanning Tunneling Microscopy (STM) / Fiels Emission Microscopy (FEM) / Lippmann-Schwinger方程式 / 電界放射
Research Abstract

Research item 'electronic states of fullerene derivatives': By calculating from the first-principle, we explain STM images of 1,2,3 and 6 impurity pentagons in carbon sheet. Calculation of 1 pentagon system reproduces STM images. For 2 pentagons, HOMOs quite resemble to those of C60 molecule on Si(001)2×1 surface. For 3 pentagons, they also resemble to those of C60 on Si(111)7×7 surface.
Impurity 6 pentagons is the model of the tip of carbon nanotube (CNT). Although many researchs of electronic states of CNT have been done over the world, the tip ends of all of CNT are 'open'. From the view point to utilize CNT for STM tip, we obtain electronic states of tip apex of 'closed' CNT. We have two types of CNT : arm-chair (C60) and zig-zag (C80). if pentagons of multi zig-zag CNT are arranged stellately, HOMOs have high charge density around 6 pentagons. Thus, we can reproduce field emission microscope (FEM) images which are obtained quite recently at Mie and Waseda Universities.
Research item 'basic theory of field emission': By the complete set of above mentioned first-principle calculation, we get Green function, solve numerically Lippmann-Schwinger integral equation, and get the wavefunction of emitted electron. We apply to CNT and compare with FEM images.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] M.WATANABE et al.: "Study of Field Emission Characteristics of Carbon with the Scanning Atom Probe"Jpn.J.Appl.Phys.. 41. 7469-7475 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Tsuyoshi YAMAGUCHI: "Non-empirical Calculation of Electronic States of Impurity Polygon in Carbon Sheet : 1, 2 and 3 Pentagons"Surf.Sci.. 493. 597-603 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 藤間信久, 山口豪: "新しいクラスターの科学 ナノサイエンスの基礎(菅野暁・近藤保・茅幸二編著)"講談社サイエンティフィク. 24 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.WATANABE et al.: "Study of Field Emission Characteristics of Carbon with the Scanning Atom Probe"Jpn.J.Appl.Phys.. 41. 7469-7475 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.YAMAGUCHI: "Non-Empirical Calculation of Electronic States of Impurity Polygon in Carbon Sheet:1,2 and 3 Pentagons"Surf.Sci. 493. 597-603 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] N.FUJIMA, T.YAMAGUCHI: "New Cluster Science-Basis of Nanoscience"Kodansha Scientific(ed. S.Sugano et al.). 24 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Watanabe: "Study of Field Emission Characteristics of Carbon with the Scanning Atom Probe"Jpn. J. Appl. Phys.. 41. 7469-7475 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 藤間信久: "新しいクラスターの科学-ナノサイエンスの基礎"講談社サイエンティフィク. 24 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T. Yamaguchi: "Non-empirical calculation of electronic states of impurity polygon in carbon sheet : 1, 2 and 3 pentagons"Surf. Sci.. 493. 597-603 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2020-05-15  

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