Proposal for a Topological Plasmon Spin Rectifier

Details Proposal for a Topological Plasmon Spin Rectifier Proposal for a Topological Plasmon Spin Rectifier

2010-11-11

arxiv.org/abs/1011.2697v2

Appl. Phys. Lett. 98, 023103 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Eq. 1 corrected; Figs 3 and 4 updated

Scientific paper

10.1063/1.3541545

We propose a device in which the spin-polarized AC plasmon mode in the surface state of a topological insulator nanostructure induces a static spin accumulation in a resonant, normal metal structure coupled to it. Using a finite-difference time-domain model, we simulate this spin-pump mechanism with drift, diffusion, relaxation, and precession in a magnetic field. This optically-driven system can serve as a DC "spin battery" for spintronic devices.

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