中国物理B ›› 2023, Vol. 32 ›› Issue (10): 107505-107505.doi: 10.1088/1674-1056/acedf8

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Nonlinear three-magnon scattering in low-damping La0.67Sr0.33MnO3 thin films

Yuelin Zhang(张跃林)1,2, Lutong Sheng(盛路通)1, Jilei Chen(陈济雷)2,3, Jie Wang(王婕)4, Zengtai Zhu(朱增泰)5, Rundong Yuan(袁润东)1, Jingdi Lu(鲁京迪)6,4, Hanchen Wang(王涵晨)1, Sijie Hao(郝思洁)4, Peng Chen(陈鹏)7, Guoqiang Yu(于国强)5,7, Xiufeng Han(韩秀峰)7, and Haiming Yu(于海明)1,2,†   

  1. 1 Fert Beijing Institute, MIIT Key Laboratory of Spintronics, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China;
    2 International Quantum Academy, Shenzhen 518048, China;
    3 Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518048, China;
    4 Department of Physics, Beijing Normal University, Beijing 100191, China;
    5 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    6 Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China;
    7 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2023-07-10 修回日期:2023-07-28 接受日期:2023-08-08 出版日期:2023-09-21 发布日期:2023-09-22
  • 通讯作者: Haiming Yu E-mail:haiming.yu@buaa.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFA1402801). Yuelin Zhang thanks the support from the China Postdoctoral Science Foundation Funded Project (Grant No. 2021M700344). Project supported also by the National Natural Science Foundation of China (Grant Nos. 12074026, 12104208, and U1801661). Lutong Sheng thanks the support from the Academic Excellence Foundation of BUAA for PhD Students.

Nonlinear three-magnon scattering in low-damping La0.67Sr0.33MnO3 thin films

Yuelin Zhang(张跃林)1,2, Lutong Sheng(盛路通)1, Jilei Chen(陈济雷)2,3, Jie Wang(王婕)4, Zengtai Zhu(朱增泰)5, Rundong Yuan(袁润东)1, Jingdi Lu(鲁京迪)6,4, Hanchen Wang(王涵晨)1, Sijie Hao(郝思洁)4, Peng Chen(陈鹏)7, Guoqiang Yu(于国强)5,7, Xiufeng Han(韩秀峰)7, and Haiming Yu(于海明)1,2,†   

  1. 1 Fert Beijing Institute, MIIT Key Laboratory of Spintronics, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China;
    2 International Quantum Academy, Shenzhen 518048, China;
    3 Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518048, China;
    4 Department of Physics, Beijing Normal University, Beijing 100191, China;
    5 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    6 Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China;
    7 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2023-07-10 Revised:2023-07-28 Accepted:2023-08-08 Online:2023-09-21 Published:2023-09-22
  • Contact: Haiming Yu E-mail:haiming.yu@buaa.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFA1402801). Yuelin Zhang thanks the support from the China Postdoctoral Science Foundation Funded Project (Grant No. 2021M700344). Project supported also by the National Natural Science Foundation of China (Grant Nos. 12074026, 12104208, and U1801661). Lutong Sheng thanks the support from the Academic Excellence Foundation of BUAA for PhD Students.

摘要: Three-magnon scattering, a nonlinear process in which a high-energy magnon splits into two low-energy magnons with energy and momentum conservation, has been widely studied in the magnonics community. Here, we report experimental observation of nonlinear three-magnon scattering in La0.67Sr0.33MnO3 thin films with low magnetic damping (~ 10-4) by all-electric and angle-resolved spin wave spectroscopy. The reflection spectra of the spin wave resonance with high-power excitation at Damon-Eshbach configuration demonstrate a scattering regime with gradual signal disappearance, where a magnon of Damon-Eshbach mode decays into two magnons of volume mode above the threshold power (-10 dBm) of the injected microwave. The nonlinear scattering is only allowed at low-field regime and the calculated dispersions of dipole-exchange spin wave claim the mechanism of allowed and forbidden three-magnon scattering. The films and heterostructures of La0.67Sr0.33MnO3 have been already demonstrated with rich physical phenomena and great versatility, in this work the nonlinear magnetic dynamics of La0.67Sr0.33MnO3 thin films is revealed, which offer more possibility for applications to oxide magnonics and nonlinear magnonic devices.

关键词: spin wave resonance, nonlinear scattering, LSMO films, microwave antenna

Abstract: Three-magnon scattering, a nonlinear process in which a high-energy magnon splits into two low-energy magnons with energy and momentum conservation, has been widely studied in the magnonics community. Here, we report experimental observation of nonlinear three-magnon scattering in La0.67Sr0.33MnO3 thin films with low magnetic damping (~ 10-4) by all-electric and angle-resolved spin wave spectroscopy. The reflection spectra of the spin wave resonance with high-power excitation at Damon-Eshbach configuration demonstrate a scattering regime with gradual signal disappearance, where a magnon of Damon-Eshbach mode decays into two magnons of volume mode above the threshold power (-10 dBm) of the injected microwave. The nonlinear scattering is only allowed at low-field regime and the calculated dispersions of dipole-exchange spin wave claim the mechanism of allowed and forbidden three-magnon scattering. The films and heterostructures of La0.67Sr0.33MnO3 have been already demonstrated with rich physical phenomena and great versatility, in this work the nonlinear magnetic dynamics of La0.67Sr0.33MnO3 thin films is revealed, which offer more possibility for applications to oxide magnonics and nonlinear magnonic devices.

Key words: spin wave resonance, nonlinear scattering, LSMO films, microwave antenna

中图分类号:  (Spin waves)

  • 75.30.Ds
75.78.-n (Magnetization dynamics) 76.50.+g (Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)