Spin-orbit gap of graphene: First-principles calculations
| dc.creator | Yao, Yugui | |
| dc.creator | Ye, Fei | |
| dc.creator | Qi, Xiao-Liang | |
| dc.creator | Zhang, Shou-Cheng | |
| dc.creator | Fang, Zhong | |
| dc.date | 2006-06-14 | |
| dc.date | 2007-01-03 | |
| dc.date.accessioned | 2026-07-07T07:37:50Z | |
| dc.date.available | 2026-07-07T07:37:50Z | |
| dc.description | Even though graphene is a low energy system consisting of the two dimensional honeycomb lattice of carbon atoms, its quasi-particle excitations are fully described by the 2+1 dimensional relativistic Dirac equation. In this paper we show that while the spin-orbit interaction in graphene is of the order of $4 meV$, it opens up a gap of the order of $10^{-3} meV$ at the Dirac points. We present the first principle calculation of the spin-orbit gap, and explain the behavior in terms of a simple tight-binding model. Our result also shows that the recently predicted quantum spin Hall effect in graphene can only occur at unrealistically low temperature. | |
| dc.description | 4 pages | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0606350 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0606350 | |
| dc.identifier | Phys. Rev. B 75, 041401(R) (2007) | |
| dc.identifier | doi:10.1103/PhysRevB.75.041401 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/120908 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Materials Science | |
| dc.title | Spin-orbit gap of graphene: First-principles calculations | |
| dc.type | text |