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

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.

References in corpus (5)

• Spin pumping by parametrically excited exchange magnons
• Enhancement of the spin pumping efficiency by spin-wave mode selection
• Electric Control of Spin Currents and Spin-Wave Logic
• Spin wave excitation in magnetic insulators by spin-transfer torque
• Large voltage from spin pumping in magnetic tunnel junctions