On the matter of topological insulators as magnetoelectrics

It has been proposed that topological insulators can be best characterized not as surface conductors, but as bulk magnetoelectrics that -- under the right conditions-- have a universal quantized magnetoelectric response coefficient $e^2/2h$. However, it is not clear to what extent these condition...

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Bibliographic Details
Main Author: N. P. Armitage, Liang Wu
Format: Article
Language:English
Published: SciPost 2019-04-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.6.4.046