Symmetry breaking by the sea of Dirac-Landau levels in graphene
| dc.creator | Lukose, Vinu | |
| dc.creator | Shankar, R. | |
| dc.date | 2007-06-28 | |
| dc.date | 2007-07-09 | |
| dc.date.accessioned | 2026-07-07T08:14:16Z | |
| dc.date.available | 2026-07-07T08:14:16Z | |
| dc.description | The quantum Hall states of graphene have a filled Dirac sea of Landau levels. The short ranged SU(4) symmetry breaking interactions can induce a staggered polarization of the sea of Dirac-Landau levels. We study this effect in the extended Hubbard model on a honeycomb lattice using mean field variational wavefunctions. We find a valley symmetry broken, anti-ferromagnetic spin ordered phase at $ν=\pm 1$ when the on-site interaction is dominant. Our mean field solution is consistent with the recently reported experimental results of Z. Jiang et. al.\cite{jiang} | |
| dc.description | 4 pages, 2 figures. Improved approximation, changes in equation for phase boundary and numbers. Conclusions remain unchanged | |
| dc.identifier | https://arxiv.org/abs/0706.4280 | |
| dc.identifier | http://arxiv.org/abs/0706.4280 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/133061 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Symmetry breaking by the sea of Dirac-Landau levels in graphene | |
| dc.type | text |