Sub-50 nm wavelength spin waves excited by low-damping Co25Fe75nanowires

Wang H, Flacke L, Wei W, Liu S, Jia H, Chen J, Sheng L, Zhang J, Zhao M, Guo C, Fang C, Han X, Yu D, Althammer M, Weiler M, Yu H (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 119

Article Number: 152402

Journal Issue: 15

DOI: 10.1063/5.0064134

Abstract

Spin waves are considered as a promising candidate for next-generation logic devices with low power dissipation. Exchange spin waves are particularly attractive for high-speed data processing and scaling down the size of magnonic logic devices. Here, we achieve the excitation of short-wavelength propagating spin waves with wavelengths as short as 45 nm in a 20 nm-thick yttrium iron garnet film covered by 70 nm-wide Co25Fe75 nanowires with low magnetic damping and high saturation magnetization, and the ferromagnetic resonance of Co25Fe75 nanowires is excited by a 200 nm-wide nano-strip line. From our measurements, we extrapolate a group velocity for exchange spin waves of up to 1.9 km/s close to the zero magnetic field (0.5 mT).

Involved external institutions

Beihang University, Beijing University of Aeronautics and Astronautics (BUAA) / 北京航空航天大学 CN China (CN) Bayerische Akademie der Wissenschaften DE Germany (DE) Southern University of Science and Technology CN China (CN) Chinese Academy of Sciences (CAS) / 中国科学院 CN China (CN)

How to cite

APA:

Wang, H., Flacke, L., Wei, W., Liu, S., Jia, H., Chen, J.,... Yu, H. (2021). Sub-50 nm wavelength spin waves excited by low-damping Co25Fe75nanowires. Applied Physics Letters, 119(15). https://doi.org/10.1063/5.0064134

MLA:

Wang, Hanchen, et al. "Sub-50 nm wavelength spin waves excited by low-damping Co25Fe75nanowires." Applied Physics Letters 119.15 (2021).

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