Xiaoming Cai, Li-Jun Lang, Shu Chen, Yupeng Wang
We study the competition of disorder and superconductivity for a one-dimensional p-wave superconductor in incommensurate potentials. With the increase in the strength of the incommensurate potential, the system undergoes a transition from a topological superconducting phase to a topologically trivial localized phase. The phase boundary is determined exactly from various aspects and the topological superconducting phase can be characterized by the presence of Majorana edge fermions in the system with open boundary condition.
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http://arxiv.org/abs/1208.2532
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