Gapless Topological Superconductors - Model Hamiltonian and Realization
Superconductivity
2015-07-30 v1 Mesoscale and Nanoscale Physics
Abstract
The existence of an excitation gap in the bulk spectrum is one of the most prominent fingerprints of topological phases of matter. In this paper, we propose a family of two dimensional Hamiltonians that yield an unusual class topological superconductor with a gapless bulk spectrum but well-localized Majorana edge states. We perform a numerical analysis for a representative model of this phase and suggest a concrete physical realization by analyzing the effect of magnetic impurities on the surface of strong topological insulators.
Cite
@article{arxiv.1503.04845,
title = {Gapless Topological Superconductors - Model Hamiltonian and Realization},
author = {Yuval Baum and Thore Posske and Ion Cosma Fulga and Björn Trauzettel and Ady Stern},
journal= {arXiv preprint arXiv:1503.04845},
year = {2015}
}
Comments
9 pages, 10 figures