Abstract
The effect of a curvature in a graphene with a spin-orbit interaction (SOI) is studied using a realistic π and σ orbital tight-binding (TB) model. The coupling of the atomic SOI and the curvature-induced orbital mixing produces an effective Rashba-type SOI and causes the k-dependent energy splitting in the low-energy electronic structure near the K point. We find that the spin Hall effect (SHE) is enhanced by the curvature effect. An effective π orbital model, which includes the SOI and curvature effects perturbatively, is also discussed.
Original language | English |
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Pages (from-to) | 729-731 |
Number of pages | 3 |
Journal | Physica E: Low-Dimensional Systems and Nanostructures |
Volume | 42 |
Issue number | 4 |
DOIs | |
Publication status | Published - Feb 2010 |
Keywords
- Graphene
- Spin Hall effect
- Spin-orbit interaction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics