Observing magnetic anisotropy in electronic transport through individual single-molecule magnets

Abstract

We review different electron transport methods to probe the magnetic properties, such as the magnetic anisotropy, of an individual Fe4 SMM. The different approaches comprise first and higher order transport through the molecule. Gate spectroscopy, focusing on the charge degeneracy-point, is presented as a robust technique to quantify the longitudinal magnetic anisotropy of the SMM in different redox states. We provide statistics showing the robustness and reproducibility of the different methods. In addition, conductance measurements typically show high-energy excited states well beyond the ground spin multiplet of SMM. Some of these excitations have their origin in excited spin multiplets, others in vibrational modes of the molecule. The interplay between vibrations, charge and spin may yield a new approach for spin control.

References in corpus (15)

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• Supramolecular Spin Valves
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Cited by in corpus (7)

• Exchange coupling inversion in a high-spin organic triradical molecule
• Redox-Induced Gating of the Exchange Interactions in a Single Organic Diradical
• Ground-state spin blockade in a single-molecule junction
• Transport mirages in single-molecule devices
• Efficient heating of single-molecule junctions for thermoelectric studies at cryogenic temperatures
• Tuning the 0$-\pi$ Josephson junction with a magnetic impurity: Role of tunnel contacts, exchange coupling, $e-e$ interactions and high-spin states
• Mapping Spin Interactions from Conductance Peak Splitting in Coulomb Blockade