Study of spin dynamics of single molecule magnet at interface

2017 Fiscal Year Final Research Report

• Project Area: Molecular Architectonics: Orchestration of Single Molecules for Novel Function
• Project/Area Number: 25110005
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Tohoku University
• Principal Investigator: Komeda Tadahiro 東北大学, 多元物質科学研究所, 教授 (30312234)
• Co-Investigator(Kenkyū-buntansha): 道祖尾 恭之 東北大学, 多元物質科学研究所, 助教 (10375165) ; 高岡 毅 東北大学, 多元物質科学研究所, 講師 (90261479)
• Project Period (FY): 2013-06-28 – 2018-03-31
• Keywords: 近藤共鳴 / 単一分子磁石 / 分子マニピュレーション / スピン計測 / スピン偏極走査型プローブ顕微鏡 / スピントロニクス

Outline of Final Research Achievements

This group has set the research target on the designing, characterization and control of surfaces, which should provide infrastructure of the 'molecular architect'. Special attentions have been paid for the phenomena formed by the interaction between the molecular spins and the conduction electron. We have demonstrated that the Kondo resonance, which is a spin-screening effect of the conduction electrons for an isolated spin, can be used as a useful technique for characterizing the spin of magnetic molecules. This has been shown for the cases of the Cu corrole molecule and the porphyrin double-decker complex of Tb atom. For the latter, we showed that a dehydrogenation can switch ON/Off of the single molecule magnet (SMM) properties. In addition, we have developed spin-polarized STM (SP-STM) to characterize the direction of the spin in nano materials. This has been applied for the determination of the magnetic anisotropic energy (MAE) of Co bilayer film on Au(111) surface.

Free Research Field

表面物理・表面科学　磁性分子