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Controlling spins in adsorbed molecules by a chemical switch

Wäckerlin, Christian and Chylarecka, Dorota and Kleibert, Armin and Müller, Kathrin and Iacovita, Cristian and Nolting, Frithjof and Jung, Thomas A. and Ballav, Nirmalya. (2010) Controlling spins in adsorbed molecules by a chemical switch. Nature communications, 1. p. 61.

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Official URL: http://edoc.unibas.ch/43480/

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Abstract

The development of chemical systems with switchable molecular spins could lead to the architecture of materials with controllable magnetic or spintronic properties. Here, we present conclusive evidence that the spin of an organometallic molecule coupled to a ferromagnetic substrate can be switched between magnetic off and on states by a chemical stimulus. This is achieved by nitric oxide (NO) functioning as an axial ligand of cobalt(II)tetraphenylporphyrin (CoTPP) ferromagnetically coupled to nickel thin-film (Ni(001)). On NO addition, the coordination sphere of Co(2+) is modified and a NO-CoTPP nitrosyl complex is formed, which corresponds to an off state of the Co spin. Thermal dissociation of NO from the nitrosyl complex restores the on state of the Co spin. The NO-induced reversible off-on switching of surface-adsorbed molecular spins observed here is attributed to a spin trans effect.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik
UniBasel Contributors:Jung, Thomas A.
Item Type:Article, refereed
Publisher:Nature Publishing Group
ISSN:2041-1723
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:04 Jul 2016 08:35
Deposited On:04 Jul 2016 08:35

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