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O: Fachverband Oberflächenphysik
O 95: Poster Session VII: Poster to Mini-Symposium: Manipulation and control of spins on functional surfaces III
O 95.4: Poster
Thursday, March 4, 2021, 10:30–12:30, P
Electronic property of organic multilayers: Vanadyl phthalocyanine on Titanyl phthalocyanine monolayer/Ag(001) — Kyungju Noh1,2, Luciano Colazzo2, Andreas Heinrich1,2, Fabio Donati1,2, and •Yujeong Bae1,2 — 1Department of Physics, Ewha Womans University, Seoul, Republic of Korea — 2Center for Quantum Nanoscience, Institute for Basic Science, Seoul, Republic of Korea
In this study, we identify orbital energy levels of Vanadyl phthalocyanine (VOPc) on Ag(001) with Titanyl phthalocyanine (TiOPc) interlayer by scanning tunneling microscopy (STM). Comparative research of single VOPc with and without molecular interlayer showed decoupling effect of the TiOPc monolayer. Using conductance measurement, we resolved HOMO and LUMO of individual VOPc molecules regularly spaced on one monolayer of TiOPc, whereas VOPc on bare metal substrate was strongly coupled with the metal substrate. Moreover, VOPc on TiOPc molecular layer has consistent adsorption direction. In this highly organized structure, the VOPc molecules presumably preserve the spin, hence representing a potential surface-absorbed molecular qubit.