Comment on "Nonzero Fermi Level Density of States for a Disordered d-wave superconductor in 2D" by Ziegler et al. PRL 77, 3013 (1996)

Details Comment on "Nonzero Fermi Level Density of States for a Disordered d-wave superconductor in 2D" by Ziegler et al. PRL 77, 3013 (1996) Comment on "Nonzero Fermi Level Density of States for a Disordered d-wave superconductor in 2D" by Ziegler et al. PRL 77, 3013 (1996)

1997-01-25

arxiv.org/abs/cond-mat/9701191v1

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevLett.78.3981

In their paper Ziegler et al. claim that the model of 2D Dirac fermions in a
random gauge potential has a finite density of states at zero energy. We point
out that the approach used in this paper fails to reproduce the perturbation
theory results for this problem.

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