Spin relaxation in persistent spin textures
Spin relaxation due to the combined diffuse scattering and spin–orbit coupling (SOC) plays a crucial role for the efficient spin transport, which is a prerequisite for spintronic devices. Here, we investigate the spin relaxation in two-dimensional systems with different types of SOC, with a particul...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ad9772 |
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| author | Mingbo Dou Huinan Li L L Tao |
| author_facet | Mingbo Dou Huinan Li L L Tao |
| author_sort | Mingbo Dou |
| collection | DOAJ |
| description | Spin relaxation due to the combined diffuse scattering and spin–orbit coupling (SOC) plays a crucial role for the efficient spin transport, which is a prerequisite for spintronic devices. Here, we investigate the spin relaxation in two-dimensional systems with different types of SOC, with a particular focus on the SOC with persistent spin texture (PSO). Based on the Boltzmann transport theory, we calculate spin diffusion matrices within the framework of Dyakonov–Perel mechanism. In the uniform case, it is found that the in-plane and out-of-plane spin relaxations for all considered SOCs are independent. Interestingly, the in-plane spin relaxation for certain PSOs reveals significant anisotropy characterized by the infinite spin relaxation time for the spin oriented along the direction of spin–orbit field. In the non-uniform case, we show that there always exists the static solution for the PSO with SU(2) symmetry, which corresponds the persistent spin helix in real space. Our work is expected to enrich the fundamental understanding of spin relaxation mechanism and provide new guidelines to design spin–orbitronic devices. |
| format | Article |
| id | doaj-art-97a6b22216e449ff9e05ddfe279a9bd3 |
| institution | Kabale University |
| issn | 1367-2630 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-97a6b22216e449ff9e05ddfe279a9bd32024-12-06T08:36:14ZengIOP PublishingNew Journal of Physics1367-26302024-01-01261212300510.1088/1367-2630/ad9772Spin relaxation in persistent spin texturesMingbo Dou0Huinan Li1L L Tao2https://orcid.org/0000-0001-6003-100XSchool of Physics, Harbin Institute of Technology , Harbin 150001, People’s Republic of ChinaSchool of Physics, Harbin Institute of Technology , Harbin 150001, People’s Republic of ChinaSchool of Physics, Harbin Institute of Technology , Harbin 150001, People’s Republic of China; Heilongjiang Provincial Key Laboratory of Advanced Quantum Functional Materials and Sensor Devices , Harbin 150001, People’s Republic of ChinaSpin relaxation due to the combined diffuse scattering and spin–orbit coupling (SOC) plays a crucial role for the efficient spin transport, which is a prerequisite for spintronic devices. Here, we investigate the spin relaxation in two-dimensional systems with different types of SOC, with a particular focus on the SOC with persistent spin texture (PSO). Based on the Boltzmann transport theory, we calculate spin diffusion matrices within the framework of Dyakonov–Perel mechanism. In the uniform case, it is found that the in-plane and out-of-plane spin relaxations for all considered SOCs are independent. Interestingly, the in-plane spin relaxation for certain PSOs reveals significant anisotropy characterized by the infinite spin relaxation time for the spin oriented along the direction of spin–orbit field. In the non-uniform case, we show that there always exists the static solution for the PSO with SU(2) symmetry, which corresponds the persistent spin helix in real space. Our work is expected to enrich the fundamental understanding of spin relaxation mechanism and provide new guidelines to design spin–orbitronic devices.https://doi.org/10.1088/1367-2630/ad9772spin relaxationspin–orbit couplingspintronicsspin transport |
| spellingShingle | Mingbo Dou Huinan Li L L Tao Spin relaxation in persistent spin textures New Journal of Physics spin relaxation spin–orbit coupling spintronics spin transport |
| title | Spin relaxation in persistent spin textures |
| title_full | Spin relaxation in persistent spin textures |
| title_fullStr | Spin relaxation in persistent spin textures |
| title_full_unstemmed | Spin relaxation in persistent spin textures |
| title_short | Spin relaxation in persistent spin textures |
| title_sort | spin relaxation in persistent spin textures |
| topic | spin relaxation spin–orbit coupling spintronics spin transport |
| url | https://doi.org/10.1088/1367-2630/ad9772 |
| work_keys_str_mv | AT mingbodou spinrelaxationinpersistentspintextures AT huinanli spinrelaxationinpersistentspintextures AT lltao spinrelaxationinpersistentspintextures |