Long-distance propagation of short-wavelength spin waves
| Autor: | Weisheng Zhao, Florian Heimbach, Haiming Yu, Mingzhong Wu, Houchen Chang, Tao Liu, Yan Zhang, Mengchao Liu, Junfeng Hu, Youguang Zhang, Sa Tu, Dapeng Yu, Tobias Stueckler, Chuanpu Liu, Jilei Chen, Ke Xia, Na Lei, Zhi-Min Liao, Peng Gao, Yang Xiao |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Computation
Science General Physics and Astronomy 02 engineering and technology 01 natural sciences General Biochemistry Genetics and Molecular Biology Article Condensed Matter::Materials Science Optics Spin wave 0103 physical sciences 010306 general physics lcsh:Science Physics Multidisciplinary business.industry Skyrmion General Chemistry 021001 nanoscience & nanotechnology Wavelength Domain wall (magnetism) CMOS Group velocity lcsh:Q Condensed Matter::Strongly Correlated Electrons 0210 nano-technology business Excitation |
| Zdroj: | Nature Communications Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018) |
| ISSN: | 2041-1723 |
| Popis: | 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 2600 m s−1, which is faster than both domain wall and skyrmion motions. Short-wavelength spin waves with high group velocity are one of the key ingredients for the spin-wave based memory-logics. Here the authors demonstrate the propagation of spin waves with wavelength down to 50 nm and group velocity up to 2600 m s−1 using ferromagnetic nanowires grown on a thin Y3Fe5O12 film strip structure. |
| Databáze: | OpenAIRE |
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