Probing Chern number by opacity and topological phase transition by a nonlocal Chern marker

In 2D semiconductors and insulators, the Chern number of the valence band Bloch state is an important quantity that has been linked to various material properties, such as the topological order. We elaborate that the opacity of 2D materials to circularly polarized light over a wide range of frequenc...

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Bibliographic Details
Main Author: Paolo Molignini, Bastien Lapierre, Ramasubramanian Chitra, Wei Chen
Format: Article
Language:English
Published: SciPost 2023-08-01
Series:SciPost Physics Core
Online Access:https://scipost.org/SciPostPhysCore.6.3.059