Singular density of states of disordered Dirac fermions in chiral models | |
Article | |
关键词: RANDOM MAGNETIC-FIELD; 2 DIMENSIONS; ANDERSON LOCALIZATION; SUPERCONDUCTORS; LATTICE; SYSTEMS; | |
DOI : 10.1103/PhysRevB.65.033301 | |
来源: SCIE |
【 摘 要 】
The Dirac fermion in the random chiral models is studied, which includes the random gauge field model and the random hopping model. We focus on a connection between continuum and lattice models to give a clear perspective for the random chiral models. Two distinct structures of density of states around zero energy, one is a power-law dependence on energy in the inter-mediate energy range and the other is a peak at zero energy, are revealed by an extensive numerical study for large systems up to 250 x 250. For the random hopping model, the above findings reconcile previous inconsistencies between the lattice and the continuum models.
【 授权许可】
Free