Electric Field Controlled Magnetic Anisotropy in a Single Molecule

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 tha...

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Published inNano letters Vol. 10; no. 9; pp. 3307 - 3311
Main Authors Zyazin, Alexander S, van den Berg, Johan W. G, Osorio, Edgar A, van der Zant, Herre S. J, Konstantinidis, Nikolaos P, Leijnse, Martin, Wegewijs, Maarten R, May, Falk, Hofstetter, Walter, Danieli, Chiara, Cornia, Andrea
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 08.09.2010
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of nanostructures
Physics
spintronics
Single-molecule magnets
molecular electronics
electromigration
nanomagnetism
Molecular magnet
Magnetic anisotropy
Electric field effects
Gallium tellurides
Tunnel effect
Magnetic field effects
Gates
Quantum transport
Magnetic properties
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Summary: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.
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ISSN:1530-6984
1530-6992
DOI:10.1021/nl1009603