Berlin 2018 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 38: Metal substrates: Adsorption of atoms and inorganic molecules
O 38.1: Vortrag
Dienstag, 13. März 2018, 14:00–14:15, MA 144
Controlling the competition between Kondo effect and spin-orbit interaction in a single molecule by atomic manipulation — •Emi Minamitani1, Ryoichi Hiraoka2, Ryuichi Arafune3, Noriyuki Tsukahara2, Satoshi Watanabe1, Maki Kawai2, and Noriaki Takagi2 — 1Department of Materials Engineering, The University of Tokyo — 2Department of Advanced Materials Science, The University of Tokyo — 3WPI-MANA, National Institute for Materials Science,
Magnetic molecules on metal surfaces are good playground to investigate and control the magnetic properties of nanostructures. In these systems, the Kondo effect and spin-orbit interaction (SOI) are two major components to determine the magnetism. When the molecule has an integer spin, these components compete each other. If the Kondo effect dominates over the SOI, the Kondo singlet state appears. On the other hand, the zero-field splitting spin state appears in the SOI dominant case. Here we report the control of the transition between these two states in iron phthalocyanine (FePc) on Au(111) by molecular manipulation with scanning tunneling microscope (STM) and elucidate the mechanism by the density functional theory (DFT) and numerical renormalization group (NRG)[1].
[1] R. Hiraoka, E. Minamitani, R. Arafune, N. Tsukahara, S. Watanabe, M. Kawai, N. Takagi, Nat. Commun 8 16012 (2017).