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Ammonia Coordination Introducing a Magnetic Moment in an On-Surface Low-Spin Porphyrin

Authors

  • Christian Wäckerlin,

    1. Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
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  • Dr. Kartick Tarafder,

    1. Department of Physics and Astronomy, University of Uppsala, Box 516, 75120 Uppsala (Sweden)
    2. Current address: Materials Science Division, Lawrence, Berkeley National Laboratory, Berkeley, CA 94720 (USA)
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  • Jan Girovsky,

    1. Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
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  • Jan Nowakowski,

    1. Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
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  • Tatjana Hählen,

    1. Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
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  • Aneliia Shchyrba,

    1. Department of Physics, University of Basel, 4056 Basel (Switzerland)
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  • Dr. Dorota Siewert,

    1. Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
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  • Dr. Armin Kleibert,

    1. Swiss Light Source, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
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  • Prof. Frithjof Nolting,

    1. Swiss Light Source, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
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  • Prof. Peter M. Oppeneer,

    1. Department of Physics and Astronomy, University of Uppsala, Box 516, 75120 Uppsala (Sweden)
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  • Prof. Thomas A. Jung,

    Corresponding author
    1. Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)
    • Thomas A. Jung, Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)

      Nirmalya Ballav, Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008 (India)

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  • Prof. Nirmalya Ballav

    Corresponding author
    1. Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008 (India)
    • Thomas A. Jung, Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI (Switzerland)

      Nirmalya Ballav, Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008 (India)

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  • We gratefully acknowledge financial supports from the National Centre of Competence in Research Nanosciences (NCCR-Nano), Swiss Nanoscience Institute (SNI), Swiss National Science Foundation, Holcim Foundation for the Advancement of Scientific Research, Switzerland; and from the Swedish-Indian Research Links Programme and Swedish National Infrastructure for Computing (SNIC), Sweden. Part of this work was performed at the SIM beamline of the Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland. The authors sincerely thank Rolf Schelldorfer for technical support all throughout. N.B. thanks K. N. Ganesh (IISER Pune) for the support during beamtimes at SLS.

Abstract

original image

Erstaunlich wandlungsfähiges Ammoniak: Der molekulare, auf einer ferromagnetischen Co-Oberfläche fixierte Spinzustand eines NiII-Porphyrins kann durch Aufnahme bzw. Abgabe eines gasförmigen NH3-Liganden reversibel zwischen einem Spin-Aus- (S=0) und Spin-An-Zustand (S=1) geschaltet werden (siehe Bild). Diese Beobachtung verweist auf eine mögliche Verwendung dieses Systems als molekularer magnetochemischer Sensor und in der Spintronik.

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