Wavelength-selective spin-current generator using infrared plasmonic metamaterials | Zendy

Satoshi Ishii | Zendy; Kenichi Uchida | Zendy; Thang Duy Dao | Zendy; Yoshiki Wada | Zendy; Eiji Saitoh | Zendy; Tadaaki Nagao | Zendy

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Wavelength-selective spin-current generator using infrared plasmonic metamaterials

Author(s) -

Satoshi Ishii,

Kenichi Uchida,

Thang Duy Dao,

Yoshiki Wada,

Eiji Saitoh,

Tadaaki Nagao

Publication year - 2017

Publication title -

apl photonics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.094

H-Index - 34

ISSN - 2378-0967

DOI - 10.1063/1.4991438

Subject(s) - plasmon , spintronics , metamaterial , optoelectronics , nanophotonics , materials science , wavelength , spin hall effect , spin (aerodynamics) , yttrium iron garnet , optics , spin polarization , physics , condensed matter physics , ferromagnetism , quantum mechanics , thermodynamics , electron

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

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