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Study on the production mechanism of spin-polarized helium field ions

Research Project

Project/Area Number 26600103
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionOsaka City University

Principal Investigator

Ataru Kobayashi  大阪市立大学, 大学院工学研究科, 准教授 (30271373)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords電界イオン化 / スピン偏極 / ヘリウムイオン / ヘリウムイオン源 / 電界イオン顕微鏡
Outline of Final Research Achievements

Helium ion microscopy is the most promising technique of surface analysis which enables us to visualize not only the surface morphology but also the spin density of states at local surface area with subatomic accuracy. For the development of ion source technology, especially in the formation of spin-polarized helium ion, we have carefully examined the field ion emission properties from a single surface atom site. Pulse counting detection of helium field ions from subatomic ares of 30 pm in diameter using a micro-probe hole field ion microscope have revealed two major results . The first one is that we have observed, for the first time, the anisotropic field ion yields even over a single atom site due to the local electric field variations as well as the surface gas diffusion across the surrounding atoms. The second one is that we have also succeeded to quantitatively determined the field distributions within a ionization zone above the single surface atom site.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (6 results)

All 2016 2015 2014 Other

All Journal Article (1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Journal Article] The gas distribution of He and Ne at metal surface in the field ion microscope2014

    • Author(s)
      K Saito and A Kobayashi
    • Journal Title

      Proceedings of the 7th International Symposium on Surface Science (ISSS-7)

      Volume: 1

    • Related Report
      2014 Research-status Report
  • [Presentation] Anisotropy of local Ne field ion yield distributions at W(112) plane edge site2016

    • Author(s)
      Yasuo Oota, Tetsuya Wakimura, Ataru Kobayashi
    • Organizer
      Atom Probe Tomography and Microscopy 2016
    • Place of Presentation
      Gyeongju, South Korea
    • Year and Date
      2016-06-12
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マイクロプローブホール電界イオン顕微鏡を用いた単一原子領域内のイオン生成率分布の精密測定2015

    • Author(s)
      太田康、脇村竜也、森岡諒太郎、小林中
    • Organizer
      第35回表面科学学術講演会
    • Place of Presentation
      つくば国際会議場、茨城県つくば市
    • Year and Date
      2015-12-01
    • Related Report
      2015 Annual Research Report
  • [Presentation] 電界イオン顕微鏡における電界吸着原子上の電場強度の定量的評価Ⅱ2014

    • Author(s)
      豊泉周也、山田達気、太田康、小林中
    • Organizer
      第34回表面科学学術講演会
    • Place of Presentation
      島根県立産業交流会館(島根県、松江市)
    • Year and Date
      2014-11-06
    • Related Report
      2014 Research-status Report
  • [Presentation] The gas distributions of He and Ne at metal surface in the field ion microscope2014

    • Author(s)
      K. Saito and A. Kobayashi
    • Organizer
      The 7th International Symposium on Surface Science (ISSS-7)
    • Place of Presentation
      Kunibiki Messe, Matsue, Shimane, Japan
    • Year and Date
      2014-11-03
    • Related Report
      2014 Research-status Report
  • [Remarks] OCU Lab.ASM

    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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