Magnetic exchange coupling of a synthetic Co(II)-complex to a ferromagnetic Ni substrate

Christian Wäckerlin; Pablo Maldonado; Lena Arnold; Aneliia Shchyrba; Jan Girovsky; Jan Nowakowski; Md. Ehesan Ali; Tatjana Hählen; Milos Baljozovic; Dorota Siewert; Armin Kleibert; Klaus Müllen; Peter M. Oppeneer; Thomas A. Jung; Nirmalya Ballav

doi:10.1039/C3CC45401K

Magnetic exchange coupling of a synthetic Co(ii)-complex to a ferromagnetic Ni substrate

Christian Wäckerlin,^a Pablo Maldonado,^b Lena Arnold,^c Aneliia Shchyrba,^d Jan Girovsky,^a Jan Nowakowski,^a Md. Ehesan Ali,^b Tatjana Hählen,^a Milos Baljozovic,^a Dorota Siewert,^d Armin Kleibert,^e Klaus Müllen,^c Peter M. Oppeneer,^b Thomas A. Jung*^a and Nirmalya Ballav*^f

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* Corresponding authors

^a Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, Villigen, Switzerland
E-mail: thomas.jung@psi.ch

^b Department of Physics and Astronomy, Uppsala University, Sweden

^c Max Planck Institute for Polymer Research, Mainz, Germany

^d Department of Physics, University of Basel, Switzerland

^e Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland

^f Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, India
E-mail: nballav@iiserpune.ac.in

Abstract

On-surface assembly of a spin-bearing and non-aromatic porphyrin-related synthetic Co(II)-complex on a ferromagnetic Ni thin film substrate and subsequent magnetic exchange interaction across the interface were studied by scanning tunnelling microscopy (STM), X-ray absorption spectroscopy (XAS), X-ray magnetic circular dichroism (XMCD) and density functional theory +U (DFT + U) calculations.

This article is part of the themed collection: Molecular Spintronics

Chemical Communications

Magnetic exchange coupling of a synthetic Co(ii)-complex to a ferromagnetic Ni substrate

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