| 报告题目 | Single Molecule Magnet Investigated with Scanning Tunneling Microscopy |
| 报告人 | Prof. Tadahiro Komeda |
| 报告人单位 | Institute of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University |
| 报告时间 | 2014-08-08 |
| 报告地点 | 合肥微尺度物质科学国家实验室九楼会议室 |
| 主办单位 | 合肥微尺度物质科学国家实验室 |
| 报告介绍 | Abstract:
A research field of molecular spintronics attracts attentions. One of advantages of organic molecules for the use in spintronics devices is that the spin and electronic states are strongly correlated with their structures. By using ‘molecule switching’ with outer simulations like as current and light, a single spin of a single molecule could be controlled.
In this lecture, I talk about scanning tunneling microscope (STM) study of a single molecule magnet (SMM) molecule adsorbed on metal surfaces. These molecules include bis(phthalocyaninato)Tb(III) (TbPc2) composed of double phthalocyanine (Pc) ligands, which shows a high blocking temperature of ~ 40 K, below which a single SMM molecule works as an quantum magnet. The STM plays an important role in revealing the bonding configuration and interface electronic structure. Moreover, recent developments enabled STM to access to spin properties of the surface with the atomic scale resolution. Here, I demonstrate the investigation of the spin state of the SMM TbPc2 molecule through the detection of the Kondo resonance, which occurs due to interactions between conduction electrons and the spin of the molecule, combined with the dynamic induced by the atom-manipulation technique. [1]
Ref. [1] T. Komeda et al., Nat Commun 2 (2011)217; R. Robles et al., Nano Lett. 12 (2012) 3609; J. Liu et al. J. Am. Chem. Soc. 135 (2013) 651; T. Komeda et al., ACS Nano 7 (2013) 1092; T. Komeda et al., ACS Nano 8, 4866 (2014). |
