Second, magnetic anisotropy can also be generated by coherent transport processes, resulting in a proximity effect, much like that responsible for the well-known (dipolar) exchange field, an effective magnetic field which allows for control over a spin-1/2 quantum dot spin-valves, even in the time-domain. The most dramatic illustration of this kind of "quadrupolar proximity effect" is the generation "from scratch" of a magnetic anisotropy term in the effective Hamiltonian of a spin-1 quantum dot. This turns an isotropic spin-1 system into a full-blown single-molecule magnet with electrically controllable magnetic bistability. The magnitude of the proximity-induced spin-reversal barrier can match that of state-of-the art single-molecule magnets."> Second, magnetic anisotropy can also be generated by coherent transport processes, resulting in a proximity effect, much like that responsible for the well-known (dipolar) exchange field, an effective magnetic field which allows for control over a spin-1/2 quantum dot spin-valves, even in the time-domain. The most dramatic illustration of this kind of "quadrupolar proximity effect" is the generation "from scratch" of a magnetic anisotropy term in the effective Hamiltonian of a spin-1 quantum dot. This turns an isotropic spin-1 system into a full-blown single-molecule magnet with electrically controllable magnetic bistability. The magnitude of the proximity-induced spin-reversal barrier can match that of state-of-the art single-molecule magnets.">
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Invited by G. Cuniberti Within the nanoSeminar |
contact
Prof. Dr. Gianaurelio Cuniberti
secretariat:
postal address:
Institute for Materials Science
visitors and courier address:TU Dresden 01062 Dresden, Germany |