Electric Field Controlled Magnetic Anisotropy in a Single Molecule

Abstract

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.

References in corpus (3)

• Spin qubits with electrically gated polyoxometalate molecules
• Kinetic Equations for Transport Through Single-Molecule Transistors
• Tunneling Spectra of Individual Magnetic Endofullerene Molecules

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• Negative differential conductance and super-Poissonian shot noise in single-molecule magnet junctions