Long-distance propagation of short-wavelength
, Jilei Chen
, Tao Liu
, Florian Heimbach
, Haiming Yu
, Yang Xiao
, Junfeng Hu
, Houchen Chang
, Tobias Stueckler
, Youguang Zhang
, Yan Zhang
, Peng Gao
, Dapeng Yu
, Ke Xia
, Na Lei
, Weisheng Zhao
& Mingzhong Wu
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 technol-
ogy 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
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
, which is faster than both domain wall and skyrmion
Fert Beijing Research Institute, School of Electronic and Information Engineering, BDBC, Beihang University, 100191 Beijing, China.
State Key Laboratory for
Mesoscopic Physics and Electron Microscopy Laboratory, School of Physics, Peking University, 100871 Beijing, China.
Department of Physics, Colorado
State University, Fort Collins, CO 80523, USA.
Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China.
Department of Physics, Southern University of Science and Technology, 518055 Shenzhen, China.
Department of Physics, Beijing Normal University,
100875 Beijing, China. Chuanpu Liu, Jilei Chen, Tao Liu and Florian Heimbach contributed equally to this work. Correspondence and requests for materials
should be addressed to H.Y. (email: firstname.lastname@example.org) or to M.W. (email: email@example.com)