Antiferromagnetic coupling of Cr-porphyrin to a bare Co substrate

Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/1943

Title:	Antiferromagnetic coupling of Cr-porphyrin to a bare Co substrate
Authors:	Girovsky, Jan Tarafder, Kartick Wackerlin, Christian Nowakowski, Jan Siewert, Dorota Hahlen, Tatjana Wckerlin, Aneliia Kleibert, Armin BALLAV, NIRMALYA Jung, Thomas A. Oppeneer, Peter M. Dept. of Chemistry
Keywords:	Antiferromagnetic coupling Cr-porphyrin Co substrate x-ray photoelectron spectroscopy Magnetic exchange coupling 2014
Issue Date:	Dec-2014
Publisher:	American Physical Society
Citation:	Physical Review B, 90(22), 220404.
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 3dorbitals 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+Ucalculations and provide evidence for a surprising type of antiferromagnetic 90?indirect magnetic exchange coupling.
URI:	http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/1943 https://doi.org/10.1103/PhysRevB.90.220404
ISSN:	2469-9950 2469-9969
Appears in Collections:	JOURNAL ARTICLES

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