Effects of dephasing on spin lifetime in ballistic spin-orbit materials
We theoretically investigate spin dynamics in spin-orbit-coupled materials. In the ballistic limit, the spin lifetime is dictated by dephasing that arises from energy broadening plus a nonuniform spin precession. For the case of clean graphene, we find a strong anisotropy with spin lifetimes that ca...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:194899 |
| Acceso en línea: | https://ddd.uab.cat/record/194899 https://dx.doi.org/urn:doi:10.1103/PhysRevLett.116.086602 |
| Access Level: | acceso abierto |
| Palabra clave: | Ballistic limit Dephasing Energy scale Spin lifetimes Spin orbits Spin precession Spin-orbit couplings Strong anisotropy |
| Sumario: | We theoretically investigate spin dynamics in spin-orbit-coupled materials. In the ballistic limit, the spin lifetime is dictated by dephasing that arises from energy broadening plus a nonuniform spin precession. For the case of clean graphene, we find a strong anisotropy with spin lifetimes that can be short even for modest energy scales, on the order of a few ns. These results offer deeper insight into the nature of spin dynamics in graphene, and are also applicable to the investigation of other systems where spin-orbit coupling plays an important role. |
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