Proximal magnetometry of monolayers of single molecule magnets on gold using polarized muons

Details Proximal magnetometry of monolayers of single molecule magnets on gold using polarized muons Proximal magnetometry of monolayers of single molecule magnets on gold using polarized muons

2009-09-25

arxiv.org/abs/0909.4634v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

The magnetic properties of a monolayer of Fe4 single molecule magnets grafted onto a Au (111) thin film have been investigated using low energy muon spin rotation. The properties of the monolayer are compared to bulk Fe4. We find that the magnetic properties in the monolayer are consistent with those measured in the bulk, strongly indicating that the single molecule magnet nature of Fe4 is preserved in a monolayer. However, differences in the temperature dependencies point to a small difference in their energy scale. We attribute this to a ~60% increase in the intramolecular magnetic interactions in the monolayer.

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