open access

https://hdl.handle.net/2115/72111

Wavelength-selective spin-current generator using infrared plasmonic metamaterials

英語

2017-10

APL Photonics

2(10)

106103

A subwavelength plasmonic absorber is an ideal platform for absorbing light locally at a desired wavelength. Here, we demonstrate wavelength-selective spin current generation by combining plasmonic absorbers with Pt/yttrium-iron-garnet spintronic devices. These devices are widely used for investigating spin-current phenomena, such as the spin Seebeck effect. At the resonance of the plasmonic absorber in the mid-infrared regime, enhanced spin-current signals are recorded. The observed light-induced spin current can be attributed to both the spin Seebeck effect and photo-spin-voltaic effect. Our results open new prospects for using plasmonic absorbers to bridge nanophotonics and spintronics in numbers of opto-spintronic applications.

学術雑誌論文

Version of Record

Creative Commons Attribution 4.0 International

Copyright 2017 Author(s). This article is distributed under a Creative Commons Attribution (CC BY) License.

2378-0967