Ultrabroadband spin-wave propagation in Co2(Mn0.6Fe0.4)Si thin films
- Beihang University, Beijing (China)
- Beihang University, Beijing (China); Peking Univ., Beijing (China)
- Colorado State Univ., Fort Collins, CO (United States)
- Victoria Univ. of Wellington (New Zealand)
- Peking Univ., Beijing (China)
- Peking Univ., Beijing (China); Southern University of Science and Technology, Shenzhen, Guangdong (China)
Ferromagnetic Heusler alloys with low magnetic damping are highly promising materials for magnonic devices, which rely on the excitation and detection of spin waves. Using all-electrical spin-wave spectroscopy we report spin-wave propagation in sputtered Co2(Mn0.6Fe0.4)Si Heusler alloy thin films with a thickness of 50 nm. In this work, we integrated a nanostructured microwave antenna to locally excite and detect propagating spin waves in a Damon-Eshbach configuration. We estimate the group velocity to be up to 12.0 km/s and we observe spin-wave propagation with a frequency band as broad as 15 GHz. From the experimental frequency dependence of group velocity we calculate the spin-wave dispersion. Our results show that all-electrical measurements are a powerful method for determining the fundamental spin-wave characteristics of Heusler alloys, over a broad and tunable range of frequencies, and with group velocities an order of magnitude higher than in conventional materials.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); Ministry of Science and Technology of the People’s Republic of China (MOST); National Science Foundation (NSF)
- Grant/Contract Number:
- SC0012670; 11674020; 11444005
- OSTI ID:
- 1470133
- Alternate ID(s):
- OSTI ID: 1404739
- Journal Information:
- Physical Review B, Vol. 96, Issue 14; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Annealing effect and interlayer modulation on magnetic damping of CoFeB/interlayer/Pt thin films
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journal | November 2018 |
Spin wave propagation in ultrathin magnetic insulators with perpendicular magnetic anisotropy
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journal | May 2019 |
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