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Tuning the Magnetic Interaction between Manganese Porphyrins and Ferromagnetic Co Substrate through Dedicated Control of the Adsorption
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science.
2009 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 113, no 32, 14381-14383 p.Article in journal (Refereed) Published
Abstract [en]

We report, on the basis of density-functional theory+U (DFT+U) calculations that metalloporphyrins can adsorb on ferromagnetic metal surfaces in two distinct configurations. Two separate adsorption minima are obtained for manganese porphyrin (MnP) on Co from our DFT+U total energy calculations, which correspond to strong and weak adsorption strengths, respectively. By steering the nature of adsorption, we find that distinct chemical interactions as well as magnetic exchange interactions between the metalloporphyrin and the metal surface can be realized. We furthermore show that a switching of the MnP molecule's spin state can occur even for the weakly adsorbed case. This new discovery opens up prospects for engineering the chemical and magnetic exchange interaction in new functionalized spintronic materials.

Place, publisher, year, edition, pages
2009. Vol. 113, no 32, 14381-14383 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-128335DOI: 10.1021/jp902644qISI: 000268661300048OAI: oai:DiVA.org:uu-128335DiVA: diva2:331288
Available from: 2010-07-22 Created: 2010-07-20 Last updated: 2017-12-12Bibliographically approved

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Sanyal, BiplabOppeneer, Peter M.

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