arxiv: 1009.2027 · v1 · pith:YXA6DBZQnew · submitted 2010-09-10 · ❄️ cond-mat.mes-hall · cond-mat.mtrl-sci

Electric Field Controlled Magnetic Anisotropy in a Single Molecule

Alexander S. Zyazin , Johan W.G. van den Berg , Edgar A. Osorio , Herre S.J. van der Zant , Nikolaos P. Konstantinidis , Martin Leijnse , Maarten R. Wegewijs , Falk May

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Walter Hofstetter Chiara Danieli Andrea Cornia

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classification ❄️ cond-mat.mes-hall cond-mat.mtrl-sci

keywords magneticcontrolledanisotropyfieldmoleculesingle-moleculeadditionadjacent

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We have measured quantum transport through an individual Fe$_4$ 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.

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Electric Field Controlled Magnetic Anisotropy in a Single Molecule

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