2011 Fiscal Year Final Research Report
Exploring of magnetic properties of magnetic molecules at interface
| Project/Area Number |
21241027
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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 | The University of Tokyo |
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Principal Investigator |
TAKAGI Noriaki 東京大学, 大学院・新領域創成科学研究科, 准教授 (50252416)
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| Co-Investigator(Kenkyū-buntansha) |
SHIRAKI Susumu 東北大学, 原子分子材料科学高等研究機構, 講師 (80342799)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 走査トンネル顕微鏡 / 非弾性トンエル分光 / スピン / 吸着 / 磁気異方性 / 表面・界面 / 鉄フタロシアニン |
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| Research Abstract |
The relationship of magnetic properties(spin state, magnetic anisotropy, ordering) of iron phthalocyanine with metal surfaces was investigated by single molecule spectroscopy with a scanning tunneling microscope. The spin excitaion spectum and Zeeman splitting caused by external magnetic fields were successfully measured for individual molecules. Depending on the coupling strength at the molecule-substrate interface, the spin state is changed from S=1 to S=0. On oxidized Cu surface, the adsorption-induced switching of magnetic anisortropy takes place. The novel SU(4) Kondo effect is observed on Au(111), which provides an intriguing example that the symmetry of local site plays a vital role in the strongly-correlated many-body phenomena such as Kondo effect. Two-dimensional molecular Kondo lattice was realized for the first time where the Kondo effect at individual molecules competes with the antiferromagnetic spin-spin couplings mediated by the substrate electrons.
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Research Products
(27 results)
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[Journal Article] Adsorption-induced switching of magnetic anisotropy in a single iron(II) phthalocyanine molecule on oxidized Cu(110) surface2009
Author(s)
N. Tsukahara, K. Noto, M. Ohara, S. Shiraki, Y. Takata, J. Miyawakai, M. Taguchi, A. Chainani, S. Shin, N. Takagi, M. Kawai
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Journal Title
Phys. Rev. Lett
Volume: 102
Pages: 4
Peer Reviewed
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