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arXiv · 2203.05474

Absolutely continuous edge spectrum of topological insulators with an odd time-reversal symmetry

Alex Bols·Christopher Cedzich
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Abstract

We show that non-trivial two-dimensional topological insulators protected by an odd time-reversal symmetry have absolutely continuous edge spectrum. The proof employs a time-reversal symmetric version of the Wold decomposition that singles out ballistic edge modes of the topological insulator.

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Alex Bols, Christopher Cedzich. 2022-03-10. Absolutely continuous edge spectrum of topological insulators with an odd time-reversal symmetry. https://doi.org/10.1007/s11005-024-01846-4

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