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arXiv · 1505.07227

Percolating States in the Topological Anderson Insulator

Adrian Girschik·Florian Libisch·Stefan Rotter
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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.

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Adrian Girschik, Florian Libisch, Stefan Rotter. 2015-05-27. Percolating States in the Topological Anderson Insulator. https://doi.org/10.1103/physrevb.91.214204

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