Zero-energy edge states and their origin in particle-hole symmetric systems: symmetry and topology
arXiv:cond-mat/0311404 · doi:10.1016/S0921-4534(02)02665-5
Abstract
We propose a criterion to determine the existence of zero-energy edge states for a class of particle-hole symmetric systems. A loop is assigned for each system, and its topology and a symmetry play an essential role. Applications to d-wave superconductors are demonstrated.
2 pages, Proceedings of LT23