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arXiv · 1801.04162

Control of oxidation and spin state in a single-molecule junction

Benjamin W. Heinrich·Christopher Ehlert·Nino Hatter·Lukas Braun·Christian Lotze·Peter Saalfrank·Katharina J. Franke
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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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Benjamin W. Heinrich, Christopher Ehlert, Nino Hatter, Lukas Braun, Christian Lotze, Peter Saalfrank, Katharina J. Franke. 2018-01-12. Control of oxidation and spin state in a single-molecule junction. https://doi.org/10.1021/acsnano.8b00312

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