Topological quantum criticality of the disordered Chern insulator

URN to cite this document:: urn:nbn:de:bvb:355-epub-541704
DOI to cite this document:: 10.5283/epub.54170

Moreno-Gonzalez, Mateo ; Dieplinger, Johannes ; Altland, Alexander

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Date of publication of this fulltext: 28 Sep 2023 16:17

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Abstract

We consider the two-dimensional topological Chern insulator in the presence of static disorder. Generic quantum states in this system are Anderson localized. However, topology requires the presence of a subset of critical states, with diverging localization length (the Chern insulator analog of the `center of the Landau band states' of the quantum Hall insulator.) We discuss geometric criteria ...