Signal propagation in time-dependent spin transport

Details Signal propagation in time-dependent spin transport Signal propagation in time-dependent spin transport

2008-06-24

arxiv.org/abs/0806.3843v3

Physics

Condensed Matter

Other Condensed Matter

10 pages, 10 figures, corrected typos (including numerical values)

Scientific paper

10.1103/PhysRevB.78.054429

This paper analyzes theoretically the signal propagation in spin transport by modulating the current passing through magnetic multilayers. Using a macroscopic description of spin transport based on the dynamical Boltzmann equation, we show that time-dependent spin transport possesses a wave-like character that leads to modifications of pure spin-diffusion dynamics. In particular, the wave-like characteristics allow one to extract a finite spin signal-propagation velocity.

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