Spin Hall Effect of Excitons

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Spin Hall effect for excitons in alkali halides and in Cu_2O is investigated theoretically. In both systems, the spin Hall effect results from the Berry curvature in k space, which becomes nonzero due to lifting of degeneracies of the exciton states by exchange coupling. The trajectory of the excitons can be directly seen as spatial dependence of the circularly polarized light emitted from the excitons. It enables us to observe the spin Hall effect directly in the real-space time.
5 pages, 2 figures

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Mesoscale and Nanoscale Physics, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/173136

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0811.0412
 http://arxiv.org/abs/0811.0412
 Phys. Rev. B 78, 205201 (2008)
 doi:10.1103/PhysRevB.78.205201

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arXiv