Topological delocalization of two-dimensional massless Dirac fermions

• Published in: arXiv.org
• Main Authors: Nomura, Kentaro, Koshino, Mikito, Ryu, Shinsei
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 17.08.2007
• Subjects: Boundary conditions; Fermions; Graphene; Physics - Mesoscale and Nanoscale Physics; Twisting

The beta function of a two-dimensional massless Dirac Hamiltonian subject to a random scalar potential, which e.g., underlies the theoretical description of graphene, is computed numerically. Although it belongs to, from a symmetry standpoint, the two-dimensional symplectic class, the beta function...