10:00 〜 10:15
▼ [16a-D405-2] Spin Polarization of Trioxotriangulene Neutral Radicals on a AuSix/Au(111) Surface
キーワード：Neutral radicals, Scanning tunneling microscopy, Spin polarization
Trioxotriangulene (TOT), as a stable neutral radical, it has attracted attention due to its highly symmetric π-conjugated system, delocalized electronic spin structures and curious physical properties[1]. This unique property can be used for the application in energy conversion and storage[2] as well as electrical conductor[3]. However, the spin polarized state of TOT has not yet been investigated at single molecule level.
Here, we study the delocalized spin polarized and electronic states of TOT molecules adsorbed on AuSix/Au(111) surfaces, which the AuSix intercalation layer was employed to decouple the interaction between the molecule and the substrate[4], with low-temperature scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). A rich variety of the STM topographic contrasts of TOT indicates the presence of various interactions between the molecule and the substrate. By applying a pulse bias voltage or the tip-induced manipulation, the magnetic property can be switched among them. Our result shows that the interaction of TOT with substrate as well as electron transfer between TOT and substrate results in change of the various contrasts and the spin state of TOT.
References:
[1] Murata, T. et al. ChemPlusChem 2019, 84, 680-685.
[2] Morita, Y. et al. Nat. Mater. 2011, 10, 947-951.
[3] Ito, H. et al. ACS Omega 2019, 4, 17569-17575.
[4] Sun, K. et al. ACS Nano 2022, 16, 11244-11250.
Here, we study the delocalized spin polarized and electronic states of TOT molecules adsorbed on AuSix/Au(111) surfaces, which the AuSix intercalation layer was employed to decouple the interaction between the molecule and the substrate[4], with low-temperature scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). A rich variety of the STM topographic contrasts of TOT indicates the presence of various interactions between the molecule and the substrate. By applying a pulse bias voltage or the tip-induced manipulation, the magnetic property can be switched among them. Our result shows that the interaction of TOT with substrate as well as electron transfer between TOT and substrate results in change of the various contrasts and the spin state of TOT.
References:
[1] Murata, T. et al. ChemPlusChem 2019, 84, 680-685.
[2] Morita, Y. et al. Nat. Mater. 2011, 10, 947-951.
[3] Ito, H. et al. ACS Omega 2019, 4, 17569-17575.
[4] Sun, K. et al. ACS Nano 2022, 16, 11244-11250.