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Magnetic Switching of a Single Molecular Magnet due to Spin-Polarized Current

Magnetic switching of a single molecular magnet (SMM) due to spin-polarized current flowing between ferromagnetic metallic electrodes is investigated theoretically. Magnetic moments of the electrodes are assumed to be collinear and parallel to the magnetic easy axis of the molecule. Electrons tunneling through a barrier between magnetic leads are coupled to the SMM via exchange interaction. The current flowing through the system as well as the spin relaxation times of the SMM are calculated from the Fermi golden rule. It is shown that spin of the SMM can be reversed by applying a voltage between the two magnetic electrodes. Moreover, the switching is reflected in the corresponding current-voltage characteristics.

preprint2007arXivOpen access
Maciej MisiornyJózef Barnas
cond-mat.mes-hallcond-mat.mtrl-sci
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Maciej MisiornyJózef Barnas

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