Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2404.15134 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914767084453888 |
|---|---|
| author | Vojáček, Libor Dueñas, Joaquín Medina Li, Jing Ibrahim, Fatima Manchon, Aurélien Roche, Stephan Chshiev, Mairbek García, José H. |
| author_facet | Vojáček, Libor Dueñas, Joaquín Medina Li, Jing Ibrahim, Fatima Manchon, Aurélien Roche, Stephan Chshiev, Mairbek García, José H. |
| contents | We report a very large spin-orbit torque (SOT) capability of chromium-based transition metal dichalcogenides (TMD) in their Janus forms CrXTe, with X=S,Se. The structural inversion symmetry breaking, inherent to Janus structures is responsible for a large SOT response generated by giant Rashba splitting, equivalent to that obtained by applying a transverse electric field of $\sim 100 \,\text{V} \,\text{nm}^{-1}$ in non-Janus CrTe\textsubscript{2}, completely out of experimental reach. By performing transport simulations on custom-made Wannier tight-binding models, Janus systems are found to exhibit a SOT performance comparable to the most efficient two-dimensional materials, while allowing for field-free perpendicular magnetization switching owing to their reduced in-plane symmetry. Altogether, our findings evidence that magnetic Janus TMDs stand as suitable candidates for ultimate SOT-MRAM devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_15134 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Giant Spin-Orbit Torque in Cr-based Janus Transition Metal Dichalcogenides Vojáček, Libor Dueñas, Joaquín Medina Li, Jing Ibrahim, Fatima Manchon, Aurélien Roche, Stephan Chshiev, Mairbek García, José H. Materials Science We report a very large spin-orbit torque (SOT) capability of chromium-based transition metal dichalcogenides (TMD) in their Janus forms CrXTe, with X=S,Se. The structural inversion symmetry breaking, inherent to Janus structures is responsible for a large SOT response generated by giant Rashba splitting, equivalent to that obtained by applying a transverse electric field of $\sim 100 \,\text{V} \,\text{nm}^{-1}$ in non-Janus CrTe\textsubscript{2}, completely out of experimental reach. By performing transport simulations on custom-made Wannier tight-binding models, Janus systems are found to exhibit a SOT performance comparable to the most efficient two-dimensional materials, while allowing for field-free perpendicular magnetization switching owing to their reduced in-plane symmetry. Altogether, our findings evidence that magnetic Janus TMDs stand as suitable candidates for ultimate SOT-MRAM devices. |
| title | Giant Spin-Orbit Torque in Cr-based Janus Transition Metal Dichalcogenides |
| topic | Materials Science |
| url | https://arxiv.org/abs/2404.15134 |