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arXiv · 1211.6716

Nonlocal optical generation of spin and charge currents on the surface of magnetic insulators using total absorption and surface plasmons

S. T. Chui·Z. F. Lin·C. R. Chang·John Xiao
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Abstract

We study the nonlocal spin and charge current generation in a finite metallic element on the surface of magnetic insulators such as \tcb{yttrium iron garnet} due to the absorption of the magnetic surface plasmon (MSP). Whereas a surface plasmon is completely reflected by a metal, \tcb{an} MSP \tcb{can be} absorbed \tcb{due to the absence of backward states}. The \tcb{injection of} MSP generates a voltage in the longitudinal direction parallel to the wave vector, \tcb{with the voltage} proportional to input power. If the metal is a ferromagnet, a spin current can also be \tcb{induced} in the longitudinal direction. Our \tcb{results provide a way to improve upon} integrated circuits of spintronics and spin wave logic devices.

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S. T. Chui, Z. F. Lin, C. R. Chang, John Xiao. 2012-11-28. Nonlocal optical generation of spin and charge currents on the surface of magnetic insulators using total absorption and surface plasmons. https://doi.org/10.1063/1.4811344

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