Control of Oxidation and Spin State in a Single-Molecule Junction

ACS Nano
Benjamin W HeinrichKatharina J Franke

Abstract

The oxidation and spin state of a metal-organic molecule determine its chemical reactivity and magnetic properties. Here, we demonstrate the reversible control of the oxidation and spin state in a single Fe porphyrin molecule in the force field of the tip of a scanning tunneling microscope. Within the regimes of half-integer and integer spin state, we can further track the evolution of the magnetocrystalline anisotropy. Our experimental results are corroborated by density functional theory and wave function theory. This combined analysis allows us to draw a complete picture of the molecular states over a large range of intramolecular deformations.

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Citations

Jun 4, 2020·The Journal of Chemical Physics·Arif UllahVladimir Chernyak

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