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Role of crystalline and damping anisotropy to the angular dependences of spin rectification effect in single crystal CoFe film

https://doi.org/10.1088/1367-2630/abb16d

Zeng, Fanlong; Shen, Xi; Li, Yi; Yuan, Zhe; Zhang, Wei; Wu, Yizheng (September 2020, New Journal of Physics)

Abstract The angular dependence of the microwave-driven spin rectification (SR) effect in single crystalline Co_0.5Fe_0.5alloy film is systematically investigated. Due to the strong current-orientation dependent anisotropic magnetoresistance (AMR), the SR effects in CoFe film strongly deviate from the ordinary sin 2φ_Mcosφ_Mrelation withφ_Mdefined as the magnetization angle away from the current. A giant Gilbert damping anisotropy in the CoFe film with a maximum–minimum ratio of 520% is observed, which can impose a strong anisotropy onto magnetic susceptibility. The observed unusual angular dependence can be well explained by the theory including current-orientation dependent AMR and anisotropic magnetic susceptibility. Our work also suggests that the strong current-orientation dependent AMR in single crystalline CoFe film could exist up to the gigahertz frequency range.
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Multi-domain ferromagnetic resonance in magnetic van der Waals crystals CrI3 and CrBr3

https://doi.org/10.1016/j.jmmm.2021.167772

Shen, Xi; Chen, Haoran; Li, Yi; Xia, Hong; Zeng, Fanlong; Xu, Jia; Kwon, Hee Young; Ji, Yi; Won, Changyeon; Zhang, Wei; et al (June 2021, Journal of Magnetism and Magnetic Materials)
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Optical Detection of Phase-Resolved Ferromagnetic Resonance in Epitaxial FeCo Thin Films

https://doi.org/10.1109/TMAG.2019.2893819

Li, Yi; Zeng, Fanlong; Saglam, Hilal; Sklenar, Joseph; Pearson, John E.; Sebastian, Thomas; Wu, Yizheng; Hoffmann, Axel; Zhang, Wei (February 2019, IEEE Transactions on Magnetics)

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Giant Anisotropy of Gilbert Damping in Epitaxial CoFe Films

https://doi.org/10.1103/PhysRevLett.122.117203

Li, Yi; Zeng, Fanlong; Zhang, Steven S. -L.; Shin, Hyeondeok; Saglam, Hilal; Karakas, Vedat; Ozatay, Ozhan; Pearson, John E.; Heinonen, Olle G.; Wu, Yizheng; et al (March 2019, Physical Review Letters)