Strong Damping-Like Torques in Wafer-Scale MoTe${}_2$ Grown by MOCVD
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2024
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| author | Chyczewski, Stasiu Thomas Lee, Hanwool Li, Shuchen Eladl, Marwan Zheng, Jun-Fei Hoffmann, Axel Zhu, Wenjuan |
| author_facet | Chyczewski, Stasiu Thomas Lee, Hanwool Li, Shuchen Eladl, Marwan Zheng, Jun-Fei Hoffmann, Axel Zhu, Wenjuan |
| contents | The scalable synthesis of strong spin orbit coupling (SOC) materials such as 1T${}^\prime$ phase MoTe${}_2$ is crucial for spintronics development. Here, we demonstrate wafer-scale growth of 1T${}^\prime$ MoTe${}_2$ using metal-organic chemical vapor deposition (MOCVD) with sputtered Mo and (C${}_4$H${}_9$)${}_2$Te. The synthesized films show uniform coverage across the entire sample surface. By adjusting the growth parameters, a synthesis process capable of producing 1T${}^\prime$ and 2H MoTe${}_2$ mixed phase films was achieved. Notably, the developed process is compatible with back-end-of-line (BEOL) applications. The strong spin-orbit coupling of the grown 1T${}^\prime$ MoTe${}_2$ films was demonstrated through spin torque ferromagnetic resonance (ST-FMR) measurements conducted on a 1T${}^\prime$ MoTe${}_2$/permalloy bilayer RF waveguide. These measurements revealed a significant damping-like torque in the wafer-scale 1T${}^\prime$ MoTe${}_2$ film and indicated high spin-charge conversion efficiency. The BEOL compatible process and potent spin orbit torque demonstrate promise in advanced device applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_19135 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Strong Damping-Like Torques in Wafer-Scale MoTe${}_2$ Grown by MOCVD Chyczewski, Stasiu Thomas Lee, Hanwool Li, Shuchen Eladl, Marwan Zheng, Jun-Fei Hoffmann, Axel Zhu, Wenjuan Materials Science The scalable synthesis of strong spin orbit coupling (SOC) materials such as 1T${}^\prime$ phase MoTe${}_2$ is crucial for spintronics development. Here, we demonstrate wafer-scale growth of 1T${}^\prime$ MoTe${}_2$ using metal-organic chemical vapor deposition (MOCVD) with sputtered Mo and (C${}_4$H${}_9$)${}_2$Te. The synthesized films show uniform coverage across the entire sample surface. By adjusting the growth parameters, a synthesis process capable of producing 1T${}^\prime$ and 2H MoTe${}_2$ mixed phase films was achieved. Notably, the developed process is compatible with back-end-of-line (BEOL) applications. The strong spin-orbit coupling of the grown 1T${}^\prime$ MoTe${}_2$ films was demonstrated through spin torque ferromagnetic resonance (ST-FMR) measurements conducted on a 1T${}^\prime$ MoTe${}_2$/permalloy bilayer RF waveguide. These measurements revealed a significant damping-like torque in the wafer-scale 1T${}^\prime$ MoTe${}_2$ film and indicated high spin-charge conversion efficiency. The BEOL compatible process and potent spin orbit torque demonstrate promise in advanced device applications. |
| title | Strong Damping-Like Torques in Wafer-Scale MoTe${}_2$ Grown by MOCVD |
| topic | Materials Science |
| url | https://arxiv.org/abs/2404.19135 |