• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Spin-polarized scanning tunneling microscopy operating in operating tip magnetization mode

Research Project

Project/Area Number 21310066
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanomaterials/Nanobioscience
Research InstitutionHokkaido University

Principal Investigator

MATSUYAMA Hideo  北海道大学, 大学院・理学研究院, 准教授 (50374187)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2009: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Keywordsスピン / ナノ計測 / 磁区
Research Abstract

In order to obtain a high resolution image routinely even in a rough surface of a ferromagnetic sample with a spin-polarized scanning tunneling microscope (SP-STM) operating in modulating tip magnetization mode, we have developed a SP-STM using a micrometer-sized magnetic tip integrated onto a magnetic recording head of a hard disk drive. The tip apex was formed into a round shape of which diameter is less than one micrometer by a focused ion beam instrument. Driving the recording head with a signal generator to switch the magnetization of the tip apex periodically generates unnecessary artificial current flow into a current-to-voltage (IV) converter through a stray capacitance, which prevents to detect the spin-polarized tunneling current precisely. To reduce the artificial current, we added a home-made circuit into the input of the IV converter which generates a countercurrent against the artificial current. We applied the SP-STM to measure the spin-dependent tunneling current of a ferromagnetic polycrystalline film, and also tried to image both the topography and the spin polarization of an iron thin film deposited on a magnetic recording medium whose local roughness is the order of several nanometers due to the crystal grains of the medium. This is the first spin image of the magnetic thin film having such a rough surface with SP-STM.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (12 results)

All 2012 2011 2010

All Presentation (12 results)

  • [Presentation] 磁化3成分の同時測定可能なμMOKEの試作2012

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学(西宮市)
    • Year and Date
      2012-03-29
    • Related Report
      2011 Annual Research Report
  • [Presentation] 磁化変調方式SP-STMによる多結晶磁性薄膜のスピン依存トンネル電流のバイアス電圧依存性2012

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-27
    • Related Report
      2011 Final Research Report
  • [Presentation] 磁化変調方式SP-STMによる多結晶磁性薄膜のスピン依存トンネル電流のバイアス電圧依存性2012

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学(西宮市)
    • Year and Date
      2012-03-27
    • Related Report
      2011 Annual Research Report
  • [Presentation] 磁化3成分の同時測定可能なμMOKEの試作2012

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 磁化変調法によるスピン偏極STMの開発2011

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-23
    • Related Report
      2011 Final Research Report
  • [Presentation] 磁気記録ヘッドを利用したスピン偏極STM用磁化変調探針の開発2011

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-23
    • Related Report
      2011 Final Research Report
  • [Presentation] 磁化変調法によるスピン偏極STHの開発2011

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学(富山市)
    • Year and Date
      2011-09-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 磁気記録ヘッドを利用したスピン偏極STM用磁化変調探針の開発2011

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学(富山市)
    • Year and Date
      2011-09-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 磁化3成分の定量観察可能なKerr顕微鏡の開発2011

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-21
    • Related Report
      2011 Final Research Report
  • [Presentation] 磁化3成分の定量観察可能なKerr顕微鏡の開発2011

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学(富山市)
    • Year and Date
      2011-09-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] 磁気記録ヘッドを利用したスピン偏極STM用磁性探針の開発2010

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-25
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] 磁化変調法によるスピン偏極STMの開発2010

    • Author(s)
      松山秀生
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-25
    • Related Report
      2011 Final Research Report 2010 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi