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Antiferromagnetic coupling of Cr-porphyrin to a bare Co substrate
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 3558515
Author(s) Girovsky, Jan; Tarafder, Kartick; Waeckerlin, Christian; Nowakowski, Jan; Siewert, Dorota; Haehlen, Tatjana; Waeckerlin, Aneliia; Kleibert, Armin; Ballav, Nirmalya; Jung, Thomas A.; Oppeneer, Peter M.
Author(s) at UniBasel Jung, Thomas
Year 2014
Title Antiferromagnetic coupling of Cr-porphyrin to a bare Co substrate
Journal Physical Review B
Volume 90
Number 22
Pages / Article-Number 220404(R)
Abstract We report the discovery of an antiferromagnetic coupling of the magnetic moment of chromium(II) tetraphenyl-porphyrin (CrTPP) molecules to the magnetization of the clean ferromagnetic Co(001) substrate. We assign this unusual molecule-substrate exchange coupling to the less than half-filled chromium 3d orbitals interacting with Co valence band electrons via porphyrin-ligand molecular orbitals. X-ray magnetic circular dichroism, x-ray photoelectron spectroscopy, and scanning tunneling microscopy are combined with DFT+U calculations and provide evidence for a surprising type of antiferromagnetic 90∘ indirect magnetic exchange coupling.
Publisher American Physical Society
ISSN/ISBN 2469-9950 ; 2469-9969
edoc-URL http://edoc.unibas.ch/43496/
Full Text on edoc Available
Digital Object Identifier DOI 10.1103/PhysRevB.90.220404
ISI-Number 000346093000001
Document type (ISI) Article
 
   

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