Subnanosecond switching of local spin-exchange coupled to ferromagnets
arXiv:0707.2600 · doi:10.1103/PhysRevB.77.205316
Abstract
The dynamics of a single spin embedded in a the tunnel junction between ferromagnetic contacts is strongly affected by the exchange coupling to the tunneling electrons. Using time-dependent equation of motion for the spin under influence of the spin-polarized tunneling current, it is shown that the magnetic field induced by bias voltage pulses allows for sub-nanosecond switching of the local spin and the possibility of spin reversal is illustrated. Furthermore, it is shown that the time-evolution of the Larmor frequency sharply peaks around the spin-flip event, and it is argued that this feature can be used as an indicator for the spin-flip.
arXiv comment5 pages, 3 figures
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- Dynamics of spin relaxation in nonequilibrium magnetic nanojunctions
- Dynamical exchange and phase induced switching of a localized molecular spin
- Detection of the spin character of Fe(001) surface states by scanning tunneling microscopy: A theoretical proposal
- Spin transport through a nanojunction with a precessing anisotropic molecular spin: Quantum interference and spin-transfer torque