Energy-efficient field-free unconventional spin-orbit torque magnetization switching dynamics in van der Waals heterostructures
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| Autores principales: | , , , , , , , , , , , , , , |
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| Formato: | Preprint |
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2024
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| author | Pandey, Lalit Zhao, Bing Tenzin, Karma Ngaloy, Roselle Lamparská, Veronika Bangar, Himanshu Ali, Aya Abdel-Hafiez, Mahmoud Zhang, Gaojie Wu, Hao Chang, Haixin Sjöström, Lars Rout, Prasanna Sławińska, Jagoda Dash, Saroj P. |
| author_facet | Pandey, Lalit Zhao, Bing Tenzin, Karma Ngaloy, Roselle Lamparská, Veronika Bangar, Himanshu Ali, Aya Abdel-Hafiez, Mahmoud Zhang, Gaojie Wu, Hao Chang, Haixin Sjöström, Lars Rout, Prasanna Sławińska, Jagoda Dash, Saroj P. |
| contents | Van der Waals (vdW) heterostructure of two-dimensional (2D) quantum materials offers a promising platform for efficient control of magnetization dynamics for non-volatile spin-based devices. However, energy-efficient field-free spin-orbit torque (SOT) switching and spin dynamics experiments to understand the basic SOT phenomena in all-2D vdW heterostructures are so far lacking. Here, we demonstrate energy-efficient field-free spin-orbit torque (SOT) switching and tunable magnetization dynamics in a vdW heterostructure comprising out-of-plane magnet Fe3GaTe2 and topological Weyl semimetal TaIrTe4. We measured the non-linear second harmonic Hall signal in TaIrTe4 /Fe3GaTe2 devices to evaluate the SOT-induced magnetization dynamics, which is characterized by a large and tunable out-of-plane damping-like torque. Energy-efficient and deterministic field-free SOT magnetization switching is achieved at room temperature with a very low current density. First-principles calculations unveil the origin of the unconventional charge-spin conversion phenomena, considering the crystal symmetry and electronic structure of TaIrTe4. These results establish that all-vdW heterostructures provide a promising route to energy-efficient, field-free, and tunable SOT-based spintronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_13095 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Energy-efficient field-free unconventional spin-orbit torque magnetization switching dynamics in van der Waals heterostructures Pandey, Lalit Zhao, Bing Tenzin, Karma Ngaloy, Roselle Lamparská, Veronika Bangar, Himanshu Ali, Aya Abdel-Hafiez, Mahmoud Zhang, Gaojie Wu, Hao Chang, Haixin Sjöström, Lars Rout, Prasanna Sławińska, Jagoda Dash, Saroj P. Mesoscale and Nanoscale Physics Materials Science Applied Physics Van der Waals (vdW) heterostructure of two-dimensional (2D) quantum materials offers a promising platform for efficient control of magnetization dynamics for non-volatile spin-based devices. However, energy-efficient field-free spin-orbit torque (SOT) switching and spin dynamics experiments to understand the basic SOT phenomena in all-2D vdW heterostructures are so far lacking. Here, we demonstrate energy-efficient field-free spin-orbit torque (SOT) switching and tunable magnetization dynamics in a vdW heterostructure comprising out-of-plane magnet Fe3GaTe2 and topological Weyl semimetal TaIrTe4. We measured the non-linear second harmonic Hall signal in TaIrTe4 /Fe3GaTe2 devices to evaluate the SOT-induced magnetization dynamics, which is characterized by a large and tunable out-of-plane damping-like torque. Energy-efficient and deterministic field-free SOT magnetization switching is achieved at room temperature with a very low current density. First-principles calculations unveil the origin of the unconventional charge-spin conversion phenomena, considering the crystal symmetry and electronic structure of TaIrTe4. These results establish that all-vdW heterostructures provide a promising route to energy-efficient, field-free, and tunable SOT-based spintronic devices. |
| title | Energy-efficient field-free unconventional spin-orbit torque magnetization switching dynamics in van der Waals heterostructures |
| topic | Mesoscale and Nanoscale Physics Materials Science Applied Physics |
| url | https://arxiv.org/abs/2408.13095 |