Dynamics of Spin-Polarized Electron Liquid and Spin Pendulum

Details Dynamics of Spin-Polarized Electron Liquid and Spin Pendulum Dynamics of Spin-Polarized Electron Liquid and Spin Pendulum

2011-09-09

arxiv.org/abs/1109.1872v1

Phys. Rev. B 73, 153204 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.73.153204

We investigate the dynamics of spin-nonequilibrium electron systems for the case when normal electron collisions prevail over the other scattering processes and the "hydrodynamic flow" regime is realized. The hydrodynamic equations for the electron liquid have been obtained and analyzed. We demonstrate that oscillations of the spin polarization are possible in a conducting ring with inhomogeneous magnetic properties. These low-decay oscillations are accompanied by the oscillations of the drift current in the ring. We demonstrate also that the spin polarization of the electron density may be revealed via the voltage between the ends of the open circuit with an inhomogeneous spin polarization. The effect may be observed both in the hydrodynamic and diffusive regimes.

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