Unveiling the anisotropy of linear and nonlinear charge-spin conversion in Weyl semimetal TaIrTe4
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arXiv
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| Autores principales: | , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916498289721344 |
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| author | Tang, Tao Li, Mengzhou Lao, Bin Zheng, Xuan Zhou, Wei Xu, Xiaofeng Pang, Jie Shi, You-guo Li, Run-Wei Wang, Zhiming |
| author_facet | Tang, Tao Li, Mengzhou Lao, Bin Zheng, Xuan Zhou, Wei Xu, Xiaofeng Pang, Jie Shi, You-guo Li, Run-Wei Wang, Zhiming |
| contents | In Weyl semimetals, the nonlinear planar Hall effect (NPHE) and spin-orbit torque (SOT) are prominent manifestations of nonlinear and linear charge-spin conversion, respectively. However, simultaneous investigations of these phenomena within a single material system are scarce, limiting our understanding of their intrinsic connection and underlying mechanisms. Here, we report the first simultaneous observation of NPHE and SOT in a TaIrTe4/Py heterostructure. By employing harmonic Hall measurements and developing a magnetic field-dependent method, we successfully separated the contributions from NPHE, field-like SOT, and damping-like SOT, enabling accurate characterization of both linear and nonlinear charge-spin conversion properties. Our experiments revealed significant anisotropy along the [100] and [010] crystallographic directions of TaIrTe4, with stronger nonlinear responses and field-like SOT along the [100] direction, and larger damping-like SOT along the [010] direction. The distinct directional dependence of these phenomena provides new insights into the interplay between surface and bulk contributions to charge-spin conversion in Weyl semimetals. These findings enhance our understanding of anisotropic charge-spin conversion mechanisms in Weyl semimetals, which may inform future research and development of spintronic devices based on topological materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_19062 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unveiling the anisotropy of linear and nonlinear charge-spin conversion in Weyl semimetal TaIrTe4 Tang, Tao Li, Mengzhou Lao, Bin Zheng, Xuan Zhou, Wei Xu, Xiaofeng Pang, Jie Shi, You-guo Li, Run-Wei Wang, Zhiming Materials Science Strongly Correlated Electrons In Weyl semimetals, the nonlinear planar Hall effect (NPHE) and spin-orbit torque (SOT) are prominent manifestations of nonlinear and linear charge-spin conversion, respectively. However, simultaneous investigations of these phenomena within a single material system are scarce, limiting our understanding of their intrinsic connection and underlying mechanisms. Here, we report the first simultaneous observation of NPHE and SOT in a TaIrTe4/Py heterostructure. By employing harmonic Hall measurements and developing a magnetic field-dependent method, we successfully separated the contributions from NPHE, field-like SOT, and damping-like SOT, enabling accurate characterization of both linear and nonlinear charge-spin conversion properties. Our experiments revealed significant anisotropy along the [100] and [010] crystallographic directions of TaIrTe4, with stronger nonlinear responses and field-like SOT along the [100] direction, and larger damping-like SOT along the [010] direction. The distinct directional dependence of these phenomena provides new insights into the interplay between surface and bulk contributions to charge-spin conversion in Weyl semimetals. These findings enhance our understanding of anisotropic charge-spin conversion mechanisms in Weyl semimetals, which may inform future research and development of spintronic devices based on topological materials. |
| title | Unveiling the anisotropy of linear and nonlinear charge-spin conversion in Weyl semimetal TaIrTe4 |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2411.19062 |