Spin wave injection and propagation in a magnetic nano-channel from a vortex core
A paper resulted from the collaboration between Dr. Shang-Fan Lee’s and Dr. Tien-Ming Chuang’s labs, led by Drs. Liang-Juan Chang and Danru Qu, has appeared in Nano Letters. Spin waves can be used as information carriers with low energy dissipation. The excitation and propagation of spin waves along reconfigurable magnonic circuits is the subject of interest in the field of magnonic applications. They experimentally demonstrate an effective excitation of spin waves in reconfigurable magnetic textures at frequencies as high as 15 GHz and wavelengths as short as 80 nm from Ni80Fe20 (Py) nanodisk-film hybrid structures. Most importantly, they demonstrate these spin wave modes, which were previously confined within a nanodisk, can now couple to and propagate along a nanochannel formed by magnetic domain walls at zero magnetic bias field. The tunable high-frequency, short-wavelength and propagating spin waves may play a vital role in energy efficient and programmable magnonic devices at the nanoscale.
Spin wave injection and propagation in a magnetic nano-channel from a vortex core
Liang-Juan Chang, Jilei Chen, Danru Qu, Li-Zai Tsai, Yen-Fu Liu, Ming-Yi Kao, Jun-Zhi Liang, Tsuei-Shin Wu, Tien-Ming Chuang, Haiming Yu* and Shang-Fan Lee*
Nano Lett. 2020, 20, 3140–3146
https://doi.org/10.1021/acs.nanolett.9b05133
Published online Apr. 23, 2020
