Experimental verification of relativistic spin-scattering in low energy TEM
| Project/Area Number |
24651123
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanostructural science
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| Research Institution | Nagoya University |
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Principal Investigator |
TANAKA Nobuo 名古屋大学, エコトピア科学研究所, 教授 (40126876)
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| Co-Investigator(Kenkyū-buntansha) |
SAITOH Koh 名古屋大学, エコトピア科学研究所, 准教授 (50292280)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | スピン偏極電子線の相互作用 / TEM / 磁性体薄膜 / マルチスライスシミュレーション / スピン偏極電子 / 低速電子顕微鏡 / スピン偏極電子銃 / 低速加速電子顕微鏡 / 散乱実験 / 低加速電子顕微鏡 |
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| Outline of Final Research Achievements |
(1) In order to estimate the interaction between spin-polarized electrons and specimens, we derived the interaction terms by starting with Dirac's equation, and obtained the wave functions below the specimens which are fit for multislice method. By the procedure, we succeeded in inclusion the interaction terms into multislice method. (2) In order to obtain TEM images
by electron pulse of picosecond, we adopted two methods. One is to use continuos laser and acoustic-optical modulator (AOM) and to obtain 25 nanosecond electron pulses for qualification of the pulse. Another is to use mode-look Ti-Sapphire laser to obtain 20 picosecond electron pulse. For accurate estimation of the pulse-width, we have developed a streak camera method using electrons. (3) We have developed a new method of measuring the phase difference of electrons and successfully resulted in detection less than 1.5 rad.
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Report
(4 results)
Research Products
(36 results)
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[Presentation] スピン偏極透過電子顕微鏡を用いた磁性体観察2015
Author(s)
鮫島健輔, 桒原真人, 南保由人, 齋藤晃, 宇治原徹, 田中信夫, 浅香透, 岡部桃子
Organizer
日本物理学会第70回年次大会
Place of Presentation
早稲田大学早稲田キャンパス
Year and Date
2015-03-21 – 2015-03-24
Related Report
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[Presentation] TEMとSTEM：私の研究から2015
Author(s)
田中信夫
Organizer
2014年度 超高分解能顕微鏡法分科会 研究会
Place of Presentation
マホロバ・マインズ三浦
Year and Date
2015-02-20 – 2015-02-21
Related Report
Invited
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[Presentation] 電子ボルテックスビームの生成および伝播2014
Author(s)
齋藤晃、長谷川裕也、平川和馬、田中信夫、内田正哉
Organizer
日本顕微鏡学会 第70回学術講演会
Place of Presentation
幕張メッセ国際会議場
Year and Date
2014-05-11 – 2014-05-13
Related Report
Invited
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