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Wavelength-selective spin-current generator using infrared plasmonic metamaterials

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Title: Wavelength-selective spin-current generator using infrared plasmonic metamaterials
Authors: Ishii, Satoshi Browse this author
Uchida, Ken-ichi Browse this author
Dao, Thang Duy Browse this author
Wada, Yoshiki Browse this author
Saitoh, Eiji Browse this author
Nagao, Tadaaki Browse this author →KAKEN DB
Issue Date: Oct-2017
Journal Title: APL Photonics
Volume: 2
Issue: 10
Start Page: 106103
Publisher DOI: 10.1063/1.4991438
Abstract: 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.
Rights: Copyright 2017 Author(s). This article is distributed under a Creative Commons Attribution (CC BY) License.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 長尾 忠昭

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