期刊
NATURE COMMUNICATIONS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-03199-8
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资金
- NSF China [11674020, 11444005]
- youth 1000 talent program
- 111 talent program [B16001]
- Ministry of Science and Technology of China MOST [2016YFA0300802]
- SHINES, an Energy Frontier Research Center - US Department of Energy, Office of Science, Basic Energy Sciences [SC0012670]
- US National Science Foundation [EFMA-1641989]
Recent years have witnessed a rapidly growing interest in exploring the use of spin waves for information transmission and computation toward establishing a spin-wave-based technology that is not only significantly more energy efficient than the CMOS technology, but may also cause a major departure from the von-Neumann architecture by enabling memory-in-logic and logic-in-memory architectures. A major bottleneck of advancing this technology is the excitation of spin waves with short wavelengths, which is a must because the wavelength dictates device scalability. Here, we report the discovery of an approach for the excitation of nm-wavelength spin waves. The demonstration uses ferromagnetic nanowires grown on a 20-nm-thick Y3Fe5O12 film strip. The propagation of spin waves with a wavelength down to 50 nm over a distance of 60,000 nm is measured. The measurements yield a spin-wave group velocity as high as 2600m s(-1), which is faster than both domain wall and skyrmion motions.
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