Strain-tuning of spin anisotropy in single-layer phosphorene: insights from Elliott-Yafet and Dyakonov-Perel spin relaxation rates
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| Format: | Preprint |
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2025
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| _version_ | 1866916561190649856 |
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| author | Jureczko, Paulina Milivojević, Marko Kurpas, Marcin |
| author_facet | Jureczko, Paulina Milivojević, Marko Kurpas, Marcin |
| contents | Materials and systems that exhibit persistent spin texture provide a platform for creating robust spin states that can be used in quantum computing, memory storage, and other advanced technological applications. In this paper we show that persistent spin-texture in single-layer phosphorene electrons close to the $Γ$ point, subjected to the finite perpendicular electric field, can be achieved by appropriately tuning the extrinsic spin-orbit coupling strength using the tensile strain of about $1.2\%$ in the zigzag direction. This is confirmed by detailed numerical investigations of the effects of strain on the intrinsic and extrinsic spin-orbit coupling, and by the effective spin-orbit Hamiltonian of phosphorene electrons and holes around the $Γ$ point, assuming the presence of the perpendicular electric field. Furthermore, the calculated spin relaxation rates due to the Dyakonov-Perel mechanism indicate a giant anisotropy of the in-plane spin, up to $10^5$, which is directly related to the discovered persistent spin texture of phosphorene electrons close to the $Γ$ point. %%%%%%%% We also show, that strain can reverse the anisotropy of spin mixing parameter $b^2$ connected to the Elliott-Yafet spin relaxation mechanism which dominates spin relaxation in phosphorene. We find the conditions under which Elliott-Yafet spin lifetime anisotropy can be largely enhanced due to synergy of spin mixing and g-factor anisotropy. %%%%%%%%%% Our results suggest that spin texture in phosphorene can be modulated by strain, enabling its potential usage in the field of spintronics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2501_05911 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Strain-tuning of spin anisotropy in single-layer phosphorene: insights from Elliott-Yafet and Dyakonov-Perel spin relaxation rates Jureczko, Paulina Milivojević, Marko Kurpas, Marcin Mesoscale and Nanoscale Physics Materials and systems that exhibit persistent spin texture provide a platform for creating robust spin states that can be used in quantum computing, memory storage, and other advanced technological applications. In this paper we show that persistent spin-texture in single-layer phosphorene electrons close to the $Γ$ point, subjected to the finite perpendicular electric field, can be achieved by appropriately tuning the extrinsic spin-orbit coupling strength using the tensile strain of about $1.2\%$ in the zigzag direction. This is confirmed by detailed numerical investigations of the effects of strain on the intrinsic and extrinsic spin-orbit coupling, and by the effective spin-orbit Hamiltonian of phosphorene electrons and holes around the $Γ$ point, assuming the presence of the perpendicular electric field. Furthermore, the calculated spin relaxation rates due to the Dyakonov-Perel mechanism indicate a giant anisotropy of the in-plane spin, up to $10^5$, which is directly related to the discovered persistent spin texture of phosphorene electrons close to the $Γ$ point. %%%%%%%% We also show, that strain can reverse the anisotropy of spin mixing parameter $b^2$ connected to the Elliott-Yafet spin relaxation mechanism which dominates spin relaxation in phosphorene. We find the conditions under which Elliott-Yafet spin lifetime anisotropy can be largely enhanced due to synergy of spin mixing and g-factor anisotropy. %%%%%%%%%% Our results suggest that spin texture in phosphorene can be modulated by strain, enabling its potential usage in the field of spintronics. |
| title | Strain-tuning of spin anisotropy in single-layer phosphorene: insights from Elliott-Yafet and Dyakonov-Perel spin relaxation rates |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2501.05911 |