期刊
NATURE NANOTECHNOLOGY
卷 9, 期 7, 页码 509-513出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NNANO.2014.88
关键词
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资金
- Deutsche Forschungsgemeinschaft
- US National Science Foundation
- Russian Ministry of Education and Science [2013-220-04-329]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1218414] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1305586, 1218419] Funding Source: National Science Foundation
Magnonics(1-3) is based on signal transmission and processing by spin waves (or their quanta, called magnons) propagating in a magnetic medium. In the same way as nanoplasmonics makes use of metallic nanostructures to confine and guide optical-frequency plasmon-polaritons(4,5), nanomagnonics uses nanoscale magnetic waveguides to control the propagation of spin waves(6). Recent advances in the physics of nanomagnetism, such as the discovery of spin-transfer torque(7,8), have created possibilities for nanomagnonics. In particular, it was recently demonstrated that nanocontact spin-torque devices can radiate spin waves(9-11), serving as local nanoscale sources of signals for magnonic applications(12). However, the integration of spin-torque sources with nanoscale magnetic waveguides, which is necessary for the implementation of integrated spin-torque magnonic circuits, has not been achieved to date. Here, we suggest and experimentally demonstrate a new approach to this integration, utilizing dipolar field-induced magnonic nanowaveguides. The waveguides exhibit good spectral matching with spin-torque nano-oscillators and enable efficient directional transmission of spin waves. Our results provide a practical route for the implementation of integrated magnonic circuits utilizing spin transfer.
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