Delocalization of 2D Dirac Fermions: the Role of a Broken Supersymmetry
作者： K. Ziegler
DOI: 10.1103/PHYSREVLETT.80.3113
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摘要: The mechanism of delocalization two-dimensional Dirac fermions with random mass is investigated, using a superfield representation. Although localization effects are very strong, one fermion component can delocalize due to the spontaneous breaking special supersymmetry model. delocalized has non-singular density states and decribed by diffusion propagator. Supersymmetry restored if mean sufficiently large. This accompanied critical boson component.
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