Percolating States in the Topological Anderson Insulator
arXiv:1505.07227 · doi:10.1103/PhysRevB.91.214204
Abstract
We investigate the presence of percolating states in disordered two-dimensional topological insulators. In particular, we uncover a close connection between these states and the so-called topological Anderson insulator (TAI), which is a topologically non-trivial phase induced by the presence of disorder. The decay of this phase could previously be connected to a delocalization of bulk states with increasing disorder strength. In this work we identify this delocalization to be the result of a percolation transition of states that circumnavigate the hills of the bulk disorder potential.
8 pages, 5 figures, to appear in Phys. Rev. B
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