Microwave meta-atom enhanced spintronic rectification

Journal Article · Mon Apr 06 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4917503· OSTI ID:22398858

Gou, Peng; Xi, Fuchun; Qian, Qinbai; Xu, Jie ^[1]; Gui, Y. S.; Hu, C. -M. ^[2]; An, Zhenghua ^[1]

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1. State Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Physics, Fudan University, Shanghai 200433 (China)
2. Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)

An artificial meta-atom (MA), or alternatively, a plasmonic antenna, has been demonstrated to significantly enhance the microwave spin rectifying photovoltage by more than two orders in magnitude (∼280) in the ferromagnetic resonance regime. The large enhancement is attributed to the unique structure of the MA which magnifies both microwave electric (∼5) and magnetic (∼56) fields in the same near-field spatial region. Our work develops the interdisciplinary direction with artificial and natural magnetism and may find promising applications in high-frequency or opto-spintronic devices and wireless microwave energy harvesting.

• OSTI ID: 22398858
• Journal Information: Applied Physics Letters, Vol. 106, Issue 14; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTENNAS
ATOMS
ELECTRIC FIELDS
FERROMAGNETIC RESONANCE
MAGNETIC FIELDS
MAGNETISM
MICROWAVE RADIATION
PLASMONS
SPIN