| Autor: |
Wright, AR, Wang, GX, Xu, W, Zeng, Z, Zhang, C |
| Rok vydání: |
2009 |
| Předmět: |
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| Popis: |
We present a quantitative analysis on the effect of the spin-orbit interaction in the optical absorption of π-electrons in graphene. It has been shown that the optical absorption amplitude of graphene around the K point in the Brillouin zone has a node in the two-dimensional Brillouin zone of honeycomb lattice. We calculated the k-dependent absorption matrix by taking into account the finite spin-orbit interaction in graphene. It was found that the spin-orbit interaction lifts the nodes in the absorption matrix. Furthermore, in the terahertz frequency regime, the spin-orbit interaction can significantly enhance the optical absorption in graphene, by up to 100%. Crown Copyright © 2008. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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