| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Gilbert damping in the layered antiferromagnet CrCl3 |
| Xinlin Mi(米锌林), Ledong Wang(王乐栋), Qi Zhang(张琪), Yitong Sun(孙艺彤), Yufeng Tian(田玉峰), Shishen Yan(颜世申), and Lihui Bai(柏利慧)† |
| School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China |
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Abstract We theoretically and experimentally studied the Gilbert damping evolution of both acoustic and optical magnetic resonance modes in the layered flake CrCl3 with an external magnetic field H applied in plane. Based on a Lagrangian equation and a Rayleigh dissipation function, we predicted that the resonance linewidth ΔH as a function of microwave frequency ω is nonlinear for both acoustic and optical modes in the CrCl3 flake, which is significantly different from the linear relationship of ΔH ∝ ω in ferromagnets. Measuring the microwave transmission through the CrCl3 flake, we obtained the ω-H dispersion and damping evolution ΔH-ω for both acoustic and optical modes. Combining both our theoretical prediction and experimental observations, we concluded that the nonlinear damping evolution ΔH-ω is a consequence of the interlayer interaction during the antiferromagnetic resonance, and the interlayer Gilbert dissipation plays an important role in the nonlinear damping evolution because of the asymmetry of the non-collinear magnetizaiton between layers.
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Received: 14 May 2021
Revised: 24 June 2021
Accepted manuscript online: 07 July 2021
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PACS:
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75.78.-n
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(Magnetization dynamics)
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76.50.+g
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(Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)
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75.50.Ee
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(Antiferromagnetics)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11774200), the Shandong Provincial Natural Science Foundation, China (Grant No. ZR2019JQ02), and the Youth Interdisciplinary Science and Innovative Research Groups of Shandong University. |
Corresponding Authors:
Lihui Bai
E-mail: lhbai@sdu.edu.cn
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Cite this article:
Xinlin Mi(米锌林), Ledong Wang(王乐栋), Qi Zhang(张琪), Yitong Sun(孙艺彤), Yufeng Tian(田玉峰), Shishen Yan(颜世申), and Lihui Bai(柏利慧) Gilbert damping in the layered antiferromagnet CrCl3 2022 Chin. Phys. B 31 027505
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