We have measured quantum transport through an individual Fe4 single-molecule magnet embedded in a three-terminal device geometry. The characteristic zero-field splittings of adjacent charge states and their magnetic field evolution are observed in inelastic tunneling spectroscopy. We demonstrate that the molecule retains its magnetic properties, and moreover, that the magnetic anisotropy is significantly enhanced by reversible electron addition / subtraction controlled with the gate voltage. Single-molecule magnetism can thus be electrically controlled.
@article{arxiv.1009.2027,
title = {Electric Field Controlled Magnetic Anisotropy in a Single Molecule},
author = {Alexander S. Zyazin and Johan W. G. van den Berg and Edgar A. Osorio and Herre S. J. van der Zant and Nikolaos P. Konstantinidis and Martin Leijnse and Maarten R. Wegewijs and Falk May and Walter Hofstetter and Chiara Danieli and Andrea Cornia},
journal= {arXiv preprint arXiv:1009.2027},
year = {2010}
}