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】

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