Journal
APL PHOTONICS
Volume 2, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4991438
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Funding
- PRESTO Phase Interfaces for Highly Efficient Energy Utilization from JST, Japan [JPMJPR12C1]
- CREST Phase Interface Science for Highly Efficient Energy Utilization from JST, Japan [JPMJCR13C3]
- ERATO Spin Quantum Rectification from JST, Japan [JPMJER1402]
- JSPS KAKENHI, Japan [JP16H06364, JP15H02012, 17H04801, JP26103005, 17K19045]
- NEC Corporation
- Noguchi Institute
- Grants-in-Aid for Scientific Research [26103005, 17K19045, 15H02012] Funding Source: KAKEN
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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 optospintronic applications. (C) 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.
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