Emergence of giant spin-orbit torque in a two-dimensional hole gas on the hydrogen-terminated diamond surface
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910939841822720 |
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| author | Sako, Fujio Ohshima, Ryo Ando, Yuichiro Morioka, Naoya Kawashima, Hiroyuki Kawase, Riku Mizuochi, Norikazu Huebl, Hans Shiraishi, Masashi |
| author_facet | Sako, Fujio Ohshima, Ryo Ando, Yuichiro Morioka, Naoya Kawashima, Hiroyuki Kawase, Riku Mizuochi, Norikazu Huebl, Hans Shiraishi, Masashi |
| contents | Two-dimensional (2D) carrier systems exhibit various significant physical phenomena for electronics and spintronics, where one of the most promising traits is efficient spin-to-charge conversion stemming from their Rashba-type spin-orbit interaction. Meanwhile, a nuisance in quests of promising materials for spintronics application is that vast majority of the investigated platforms consists of rare and/or toxic elements, such as Pt and Te, which hinders progress of spin conversion physics in view of element strategy and green technology. Here, we show the emergence of giant spin-orbit torque driven by 2D hole gas at the surface of hydrogen-terminated diamond, where the constituent substances are ubiquitous elements, carbon and hydrogen. The index of its spin torque efficiency at room temperature is several times greater than that of rare metal, Pt, the benchmark system/element for spin-to-charge conversion. Our finding opens a new pathway for more sustainable spintronics and spin-orbitronics applications, with efficient spin-orbit torque employing ubiquitous non-toxic elements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_10978 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Emergence of giant spin-orbit torque in a two-dimensional hole gas on the hydrogen-terminated diamond surface Sako, Fujio Ohshima, Ryo Ando, Yuichiro Morioka, Naoya Kawashima, Hiroyuki Kawase, Riku Mizuochi, Norikazu Huebl, Hans Shiraishi, Masashi Mesoscale and Nanoscale Physics Materials Science Two-dimensional (2D) carrier systems exhibit various significant physical phenomena for electronics and spintronics, where one of the most promising traits is efficient spin-to-charge conversion stemming from their Rashba-type spin-orbit interaction. Meanwhile, a nuisance in quests of promising materials for spintronics application is that vast majority of the investigated platforms consists of rare and/or toxic elements, such as Pt and Te, which hinders progress of spin conversion physics in view of element strategy and green technology. Here, we show the emergence of giant spin-orbit torque driven by 2D hole gas at the surface of hydrogen-terminated diamond, where the constituent substances are ubiquitous elements, carbon and hydrogen. The index of its spin torque efficiency at room temperature is several times greater than that of rare metal, Pt, the benchmark system/element for spin-to-charge conversion. Our finding opens a new pathway for more sustainable spintronics and spin-orbitronics applications, with efficient spin-orbit torque employing ubiquitous non-toxic elements. |
| title | Emergence of giant spin-orbit torque in a two-dimensional hole gas on the hydrogen-terminated diamond surface |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2411.10978 |