Highly Ordered Surface Self-Assembly of Fe4 Single Molecule Magnets

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ERLER, Philipp, Peter SCHMITT, Nicole BARTH, Andreas IRMLER, Samuel BOUVRON, Thomas HUHN, Ulrich GROTH, Fabian PAULY, Luca GRAGNANIELLO, Mikhail FONIN, 2015. Highly Ordered Surface Self-Assembly of Fe4 Single Molecule Magnets. In: Nano Letters. 15(7), pp. 4546-4552. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/acs.nanolett.5b01120

@article{Erler2015-06-18Highl-31221, title={Highly Ordered Surface Self-Assembly of Fe4 Single Molecule Magnets}, year={2015}, doi={10.1021/acs.nanolett.5b01120}, number={7}, volume={15}, issn={1530-6984}, journal={Nano Letters}, pages={4546--4552}, author={Erler, Philipp and Schmitt, Peter and Barth, Nicole and Irmler, Andreas and Bouvron, Samuel and Huhn, Thomas and Groth, Ulrich and Pauly, Fabian and Gragnaniello, Luca and Fonin, Mikhail} }

Highly Ordered Surface Self-Assembly of Fe<sub>4</sub> Single Molecule Magnets Schmitt, Peter Single molecule magnets (SMMs) have attracted considerable attention due to low-temperature magnetic hysteresis and fascinating quantum effects. The investigation of these properties requires the possibility to deposit well-defined monolayers or spatially isolated molecules within a well-controlled adsorption geometry. Here we present a successful fabrication of self-organized arrays of Fe<sub>4</sub> SMMs on hexagonal boron nitride (h-BN) on Rh(111) as template. Using a rational design of the ligand shell optimized for surface assembly and electrospray as a gentle deposition method, we demonstrate how to obtain ordered arrays of molecules forming perfect hexagonal superlattices of tunable size, from small islands to an almost perfect monolayer. High-resolution low temperature scanning tunneling microscopy (STM) reveals that the Fe<sub>4</sub> molecule adsorbs on the substrate in a flat geometry, meaning that its magnetic easy axis is perpendicular to the surface. By scanning tunneling spectroscopy (STS) and density functional theory (DFT) calculations, we infer that the majority- and minority-spin components of the spin-split lowest unoccupied molecular orbital (LUMO) can be addressed separately on a submolecular level. Bouvron, Samuel Gragnaniello, Luca eng Erler, Philipp Irmler, Andreas Huhn, Thomas Irmler, Andreas Huhn, Thomas Groth, Ulrich Pauly, Fabian Barth, Nicole Schmitt, Peter Bouvron, Samuel 2015-06-18 Pauly, Fabian Fonin, Mikhail 2015-06-19T12:02:52Z Erler, Philipp Fonin, Mikhail Groth, Ulrich Barth, Nicole 2015-06-19T12:02:52Z Gragnaniello, Luca

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