Probing Transverse Magnetic Anisotropy by Electronic Transport through a Single-Molecule Magnet

Abstract

By means of electronic transport, we study the transverse magnetic anisotropy of an individual Fe${}_4$ single-molecule magnet (SMM) embedded in a three-terminal junction. In particular, we determine in situ the transverse anisotropy of the molecule from the pronounced intensity modulations of the linear conductance, which are observed as a function of applied magnetic field. The proposed technique works at temperatures exceeding the energy scale of the tunnel splittings of the SMM. We deduce that the transverse anisotropy for a single Fe${}_4$ molecule captured in a junction is substantially larger than the bulk value.

18 pages with 16 figures; version as published

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• First-principles many-body models for electron transport through molecular nanomagnets
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• Electron-vibron coupling effects on electron transport via a single-molecule magnet
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• Dynamical spin accumulation in large-spin magnetic molecules
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• Giant superconducting proximity effect on spintronic anisotropy