Vanadyl Phthalocyanine single molecules on insulating layers; ultrathin MgO film and Titanyl Phthalocyanine monolayer

ORAL

Abstract

Molecular spin is drawing attention as quantum processing platform due to its chemical tunability and scalability. Vanadyl Phthalocyanine (VOPc) is one of the promising molecular qubit candidates, yet it shows signs of strong coupling with scattering electrons when directly sitting on metal surface. Herein, we investigate VOPc single molecules on different insulating layers, magnesium oxide (MgO) bilayer and Titanyl Phthalocyanine (TiOPc) monolayer. By combined study of scanning tunneling spectroscopy (STS) and X-ray circular dichroism (XMCD), we confirm that VOPc in both systems are well decoupled from the metallic substrate, while retaining the pristine molecular spin characteristics. Furthermore, we discuss the novel properties of VOPc - symmetry reduction when adsorbed on MgO film and formation of long-range ordering on molecular template - in combination with density function theory (DFT) calculations. Our work provides a viable method towards the future integration of molecular spin qubits into solid-state quantum devices.

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Presenters

  • Kyungju Noh

    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS). Institute for Basic Science (IBS). Ewha Womans University

Authors

  • Kyungju Noh

    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS). Institute for Basic Science (IBS). Ewha Womans University

  • Luciano Colazzo

    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea
    • Center for Quantum Nanoscience (QNS). Institute for Basic Science (IBS). Ewha Womans University

  • Corina Urdaniz

    • EWHA Womans Univ
    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS), Institute for Basic Science(IBS), Ewha Womans University

  • Jaehyun Lee

    • Center for Quantum Nanoscience (QNS), Ewha Womans University

  • Denis Krylov

    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea

  • Parul Devi

    • Center for Quantum Nanoscience (QNS), Ewha Womans University

  • Andrin Doll

    • Swiss Light Source (SLS)

  • Andreas Heinrich

    • Center for Quantum Nanoscience
    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • IBS Center for Quantum Nanoscience
    • Center for Quantum Nanoscience (QNS). Institute for Basic Science (IBS).Department of Physics, Ewha Womans University

  • Christoph Wolf

    • EWHA Woman's Univ
    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS). Institute for Basic Science (IBS). Ewha Womans University
    • Center for Quantum Nanoscience (QNS), Institute for Basic Science(IBS), Ewha Womans University

  • Fabio Donati

    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea
    • IBS Center for Quantum Nanoscience
    • Center for Quantum Nanoscience (QNS). Institute for Basic Science (IBS). Department of Physics,Ewha Womans University

  • Yujeong Bae

    • Center for Quantum Nanoscience
    • Center for Quantum Nanoscience (QNS), Ewha Womans University
    • Center for Quantum Nanoscience (QNS). Institute for Basic Science (IBS). Ewha Womans University