Vacuum fluctuations and the spin current in mesoscopic structures with collinear magnetic order

Details Vacuum fluctuations and the spin current in mesoscopic structures with collinear magnetic order Vacuum fluctuations and the spin current in mesoscopic structures with collinear magnetic order

2007-02-07

arxiv.org/abs/cond-mat/0702168v2

Physics

Condensed Matter

Materials Science

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.75.201301

We show that in magnetic nanostructures with a homogeneous magnetic order, the equilibrium spin current can be nonzero. For example, this is the case of a wide magnetic ring with the magnetization along the ring axis. The physical reason of this effect is a variation of the orientation of anisotropy axis inducing a spin torque acting on the magnetic ions. The mechanism of the spin current generation is related to the quantum vacuum fluctuations in the magnetic system.

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