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Special Issue:
SPECIAL TOPIC — Advanced magnonics
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| SPECIAL TOPIC — Advanced magnonics |
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Temperature and angle dependence of magnetic damping in manganite thin films |
| Jinghua Ren(任京华)1,2,†, Yuelin Zhang(张跃林)1,2,†,‡, Miming Cai(蔡米铭)1,2,†, Yuhan Li(李语涵)1,2, Mingming Li(李明明)3, Tianqi Wang(王天琦)1,2, Dekun Shen(沈德坤)1,2, Hongyu Zhou(周鸿渝)1,2, Xiangwei Zhu(朱祥维)4, and Jinxing Zhang(张金星)1,2,§ |
1 School of Physics and Astronomy, Beijing Normal University, Beijing 100875, China;
2 Key Laboratory of Multiscale Spin Physics, Ministry of Education, Beijing 10087, China;
3 School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China;
4 School of Electronics and Communication Engineering, Sun Yat-Sen University, Shenzhen 518107, China |
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Abstract Magnonics and magnonic materials have attracted widespread interest in the spintronics community and demonstrate potential for applications in the next generation of information technology. Recent advances in manganite thin films highlight their promise for magnonics, in which enhanced film quality and strain control of spin and electronic structures play a crucial role in reducing magnetic damping. Here, we report the fabrication of La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ thin films of varying quality via pulsed laser deposition. The quality of epitaxial films is characterized using atomic force microscopy and x-ray diffraction. A pronounced fourfold anisotropy in the magnetic damping (with a ratio of about 150%) is observed, where the minimum damping occurs along the [110] crystalline orientation. Notably, improved sample quality significantly reduces the magnetic damping at low temperatures. The highest-quality sample, featuring atomic-scale terraces, exhibits a magnetic damping of $\sim 2.5\times 10^{-3}$ at 5 K. Our results not only demonstrate effective reduction of low-temperature magnetic damping in high-quality correlated oxide systems but also provides a strategy and material platform for exploring novel quantum phenomena and for designing low-temperature magnonic devices.
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Received: 31 March 2025
Revised: 13 May 2025
Accepted manuscript online: 04 June 2025
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PACS:
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75.30.Ds
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(Spin waves)
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76.50.+g
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(Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)
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31.15.aq
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(Strongly correlated electron systems: generalized tight-binding method)
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| Fund: This work was supported by the National Key Research and Development Program of China (Grant Nos. 2023YFA1406500, J.Z.; 2021YFA0718700, J.Z.), the National Natural Science Foundation of China (Grant Nos. T2350005, J.Z.; 12404119, Y.Z.; 52225205, J.Z.), the Beijing Natural Science Foundation (Grant No. Z240008, J.Z.), and the Fundamental Research Funds for the Central Universities (Y.Z. and J.Z.). |
Corresponding Authors:
Yuelin Zhang, Jinxing Zhang
E-mail: yuelin.zhang@bnu.edu.cn;jxzhang@bnu.edu.cn
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Cite this article:
Jinghua Ren(任京华), Yuelin Zhang(张跃林), Miming Cai(蔡米铭), Yuhan Li(李语涵), Mingming Li(李明明), Tianqi Wang(王天琦), Dekun Shen(沈德坤), Hongyu Zhou(周鸿渝), Xiangwei Zhu(朱祥维), and Jinxing Zhang(张金星) Temperature and angle dependence of magnetic damping in manganite thin films 2025 Chin. Phys. B 34 107504
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