2009 Fiscal Year Final Research Report
Exploitation of femto-second time resolved ultraviolet magnetic circular dichroism photoelectron emission microscopy
| Project/Area Number |
19201023
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | Institute for Molecular Science |
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Principal Investigator |
YOKOYAMA Toshihiko Institute for Molecular Science, 物質分子科学研究領域, 教授 (20200917)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAGAWA Takeshi 分子科学研究所, 物質分子科学研究領域, 助教 (80353431)
TAKAGI Yasumasa 分子科学研究所, 物質分子科学研究領域, 助教 (30442982)
MATSUMOTO Yoshiyasu 京都大学, 大学院・理学研究科, 教授 (70181790)
WATANABE Kazuya 分子科学研究所, 分子制御レーザー開発センター, 助教 (30300718)
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| Project Period (FY) |
2007 – 2009
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| Keywords | ナノ表面界面 / 光電子顕微鏡 / 磁気記録 / 量子ドット / 磁気円二色性 |
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| Research Abstract |
We invented a novel magnetic microscope, based on ultraviolet (UV) magnetic circular dichroism (MCD) photoelectron emission microscope (PEEM) with a spatial resolution of ～50nm using tunable UV lasers, and further developed a femto-second time-resolved pump-and-probe mciroscope. This performance is much superior to a similar method of X-ray MCD PEEM using a third-generation synchrotron radiation light source since this method allows in-laboratory experiments and thousand times faster time resolving power. Moreover, we succeeded in the observation of two-photon UV MCD PEEM images with a high sensitivity. We also investigated the origin of the huge enhancement of the MCD sensitivity in the vicinity of the work function threshold by using the angle-resolved photoemission spectroscopy.
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