Spin mapping of magnetic phthalocyanine molecule by laser excited magnetic circular dichroism scanning tunneling microscopy

• Project/Area Number: 24510159
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: Institute for Molecular Science
• Principal Investigator: TAKAGI Yasumasa 分子科学研究所, 物質分子科学研究領域, 助教 (30442982)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2013: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 走査トンネル顕微鏡 / 磁気円二色性 / スピントロニクス / 走査トンネル顕微

Outline of Final Research Achievements

We developed a new laser excited magnetic circular dichroism scanning tunneling microscopy, which detected the signal difference by applying circular polarized lights, for observing the magnetic domains of the sample surface. Additionally, we observed the magnetic property of iron phthalocyanine thin films on metal surface by means of in-situ X-ray magnetic circular dichroism at Beamline 4B of UVSOR-III.The XMCD result suggests that the electronic state of iron phthalocyanine on the Co layer is modified by strong interaction between the molecule and the Co layer and the presence of a ferromagnetic exchange coupling between the Fe atom in the molecular and the Co atom in the underlying layer.

Research Products

• [Journal Article] Magnetic Interactions of Vanadyl Phthalocyanine with Ferromagnetic Iron, Cobalt, and Nickel Surfaces (2014)
  • Author(s): Keitaro Eguchi, Yasumasa Takagi, Takeshi Nakagawa, and Toshihiko Yokoyama
  • Journal Title: Journal of Chemistry C Volume: 118 Issue: 31 Pages: 17633-17637
  • DOI: 10.1021/jp503851k
  • Peer Reviewed / Open Access
• [Journal Article] Molecular Orientation and Electronic States of Vanadyl Phthalocyanine on Si(111) and Ag(111) Surfaces (2013)
  • Author(s): Keitaro Eguchi, Yasumasa Takagi, Takeshi Nakagawa, and Toshihiko Yokoyama
  • Journal Title: Journal of Physical Chemistry C Volume: 117 Issue: 44 Pages: 22843-22851
  • DOI: 10.1021/jp406906k
  • Peer Reviewed
• [Presentation] 金属表面上の鉄フタロシアニン薄膜のXMCD測定 (2012)
  • Author(s): 高木康多，江口敬太郎, 中川剛志，横山利彦
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学（横浜市)
• [Presentation] 金属表面上の鉄フタロシアニン薄膜のXMCD測定 (2012)
  • Author(s): 高木康多，江口敬太郎, 中川剛志，横山利彦
  • Organizer: 第１５回XAFS討論会
  • Place of Presentation: 白兎会館(鳥取市)
• [Presentation] Magnetic Property of Iron Phthalocyanine Films on Metal Surfaces studied by XMCD (2012)
  • Author(s): Yasumasa Takagi, Keitaro Eguchi, Takeshi Nakagawa and Toshihiko Yokoyama
  • Organizer: The 21th International Colloquium on Magnetic Films and Surfaces (ICMFS21)
  • Place of Presentation: Fudan University(Shanghai, china)
• [Presentation] Magnetic Property of Iron Phthalocyanine Films on Metal Surfaces studied by XMCD (2012)
  • Author(s): Yasumasa Takagi, Keitaro Eguchi, Takeshi Nakagawa and Toshihiko Yokoyama
  • Organizer: The 15th International Conference on X-ray Absorption Fine Structure (XAFS-XV)
  • Place of Presentation: Pullman Beijing West Wanda (Beijing, China)