Shape of Disorder-Broadened Landau Subbands in Graphene
Abstract
In this Letter, we calculate the density of states of graphene under a highly uniform magnetic field and white-noise random potential. We discover that the disorder-broadened zero-energy Landau band has a Gaussian shape and its width is proportional to the random potential variance and the square root of magnetic field. We also use the Wegner-type calculation to justify our simulation results.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 2009
- DOI:
- 10.1103/PhysRevLett.102.056803
- arXiv:
- arXiv:0810.4475
- Bibcode:
- 2009PhRvL.102e6803Z
- Keywords:
-
- 81.05.Uw;
- 71.23.-k;
- 71.55.-i;
- Carbon diamond graphite;
- Electronic structure of disordered solids;
- Impurity and defect levels;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- doi:10.1103/PhysRevLett.102.056803