biostudies-literatureUnknown9(1)Liu CRecent 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.Nature communications738https://www.ebi.ac.uk/biostudies/studies/S-EPMC5821877biostudies-literatureLong-distance propagation of short-wavelength spin waves.PMC5821877Liao ZLei NHeimbach FWu MChen JLiu MXiao YZhao WYu DLiu TYu HXia KTu SGao PHu JZhang YLiu CChang HStueckler TfalseLong-distance propagation of short-wavelength spin waves.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.2018-01-01T00:00:00Z2018 Feb2026-07-15T17:54:23.299Z2026-07-08T03:08:01.764ZS-EPMC58218772946741610.1038/s41467-018-03199-8