Spin Polarized Transport Through a Single-Molecule Magnet: Current-Induced Magnetic Switching

Abstract

Magnetic switching of a single-molecule magnet (SMM) due to spin-polarized current is investigated theoretically. The charge transfer between the electrodes takes place via the lowest unoccupied molecular orbital (LUMO) of the SMM. Generally, the double occupancy of the LUMO level, and a finite on-site Coulomb repulsion, is taken into account. Owing to the exchange interaction between electrons in the LUMO level and the SMM's spin, the latter can be reversed. The perturbation approach (Fermi golden rule) is applied to calculate current-voltage characteristics. The influence of Coulomb interactions on the switching process is also analyzed.

5 pages with 4 EPS figures; version as accepted for publication in Phys. Rev. B (more general model introduced)

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• Multireference Ab Initio Studies of Magnetic Properties of Terbium-Based Single-Molecule Magnets
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• Addressing the Challenges of Using Ferromagnetic Electrodes in the Molecular Spintronics Devices
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• Spin backflow: a non-Markovian effect on spin pumping
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• Adiabatically twisting a magnetic molecule to generate pure spin currents in graphene
• Tunneling anisotropic magnetoresistance in single-molecule magnet junctions
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• Performance of the T-matrix based master equation for Coulomb drag in double quantum dots
• Magnetic-anisotropy induced spin blockade in a single-molecule transistor
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• Spin nutation effects in molecular nanomagnet$-$superconductor tunnel junctions
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• Magnetoelectric effect in the mixed valence polyoxovanadate cage V${}_{12}$