Quasi-Particle density of states of disordered d-wave superconductors

Details Quasi-Particle density of states of disordered d-wave superconductors Quasi-Particle density of states of disordered d-wave superconductors

2000-07-26

arxiv.org/abs/cond-mat/0007413v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures included

Scientific paper

We present a numerical study of the quasi-particle density of states (DoS) of two-dimensional d-wave superconductors in the presence of smooth disorder. We find power law scaling of the DoS with an exponent depending on the strength of the disorder and the superconducting order parameter in quantitative agreement with the theory of Nersesyan et al. (Phys.Rev.Lett. 72, 2628 (1994)). For strong disorder a transition to a constant DoS occurs. Our results are in contrast to the case of short-ranged disorder.

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