Stability of the boundary zero modes in one-dimensional topological superconductors
arXiv:1703.03399 · doi:10.1103/PhysRevB.95.134514
Abstract
We calculate the spectrum of the Andreev bound states in a one-dimensional superconductor with a strong Rashba spin-orbit coupling. We focus on the fate of the zero-energy Andreev modes in the presence of time reversal symmetry-breaking perturbations, both at the boundary and in the bulk. It is shown that the zero modes are destroyed by time reversal symmetry-breaking fluctuations, even if the mean-field state of the system is time-reversal invariant and topologically nontrivial.
9 pages, 4 figures
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