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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2412.19077 |
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| _version_ | 1866910764490555392 |
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| author | Guo, Liangliang Cai, Ranran Zhang, Zhenhua Xing, Wenyu Qiao, Weiliang Xiong, Rui Lu, Zhihong Xie, Xincheng Han, Wei |
| author_facet | Guo, Liangliang Cai, Ranran Zhang, Zhenhua Xing, Wenyu Qiao, Weiliang Xiong, Rui Lu, Zhihong Xie, Xincheng Han, Wei |
| contents | Half-metals are a class of quantum materials with 100% spin-polarization at the Fermi level and have attracted a lot of attention for future spintronic device applications. CrO2 is one of the most promising half-metal candidates, for which the electrical and magnetic properties have been intensively studied in the last several decades. Here, we report the observation of a giant anisotropy (~1600%) of effective Gilbert damping in the single crystalline half metallic (100)-CrO2 thin films, which is significantly larger than the values observed on conventional ferromagnetic Fe and CoFe thin films. Furthermore, the effective Gilbert damping exhibits opposite temperature-dependent behaviors below 50 K with magnetic field along [010] direction and near [001] direction. These experimental results suggest the strong spin-orbit coupling anisotropy of the half-metallic CrO2 and might pave the way for future magnonic computing applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_19077 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Extremely Large Anisotropy of Effective Gilbert Damping in Half-Metallic CrO2 Guo, Liangliang Cai, Ranran Zhang, Zhenhua Xing, Wenyu Qiao, Weiliang Xiong, Rui Lu, Zhihong Xie, Xincheng Han, Wei Materials Science Half-metals are a class of quantum materials with 100% spin-polarization at the Fermi level and have attracted a lot of attention for future spintronic device applications. CrO2 is one of the most promising half-metal candidates, for which the electrical and magnetic properties have been intensively studied in the last several decades. Here, we report the observation of a giant anisotropy (~1600%) of effective Gilbert damping in the single crystalline half metallic (100)-CrO2 thin films, which is significantly larger than the values observed on conventional ferromagnetic Fe and CoFe thin films. Furthermore, the effective Gilbert damping exhibits opposite temperature-dependent behaviors below 50 K with magnetic field along [010] direction and near [001] direction. These experimental results suggest the strong spin-orbit coupling anisotropy of the half-metallic CrO2 and might pave the way for future magnonic computing applications. |
| title | Extremely Large Anisotropy of Effective Gilbert Damping in Half-Metallic CrO2 |
| topic | Materials Science |
| url | https://arxiv.org/abs/2412.19077 |