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Self-Assembly and Superexchange Coupling of Magnetic Molecules on Oxygen-Reconstructed Ferromagnetic Thin Film

Chylarecka, Dorota and Waeckerlin, Christian and Kim, Timur K. and Mueller, Kathrin and Nolting, Frithjof and Kleibert, Armin and Ballav, Nirmalya and Jung, Thomas A.. (2010) Self-Assembly and Superexchange Coupling of Magnetic Molecules on Oxygen-Reconstructed Ferromagnetic Thin Film. The journal of physical chemistry letters, 1 (9). pp. 1408-1413.

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Official URL: http://edoc.unibas.ch/43509/

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Abstract

We report on the distinctive molecular assembly and exchange coupling of paramagnetic manganese(III) teraphenylporphyrin chloride (MnTPPCl) molecules on a metallic cobalt (Co(001)) and on an oxygen-reconstructed cobalt (O/Co(001)) substrate, the latter substrate being prepared by surfactant-mediated growth. For MnTPPCl, a ferromagnetic (FM) exchange coupling to Co(001) and an antiferromagnetic (AFM) exchange coupling to O/Co(001) were identified. The random adsorption of MnTPPCl on Co(001) is turned into a self-assembled and well-ordered 2D molecular domains on O/Co(001). Different oxidation states for Mn ions are found to exist on different substrates. The here presented spectro-microscopy-correlation approach, involving X-ray magnetic circular dichroism (XMCD) spectroscopy, X-ray photoelectron spectroscopy (XPS), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM), demonstrates its strength to identifty the mechanism involved in organic spintronic interfaces.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik
05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Jung, Thomas A.
Item Type:Article, refereed
Publisher:American Chemical Society
ISSN:1948-7185
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:04 Jul 2016 09:25
Deposited On:04 Jul 2016 09:25

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