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|Title:||Edge-following topological states|
|Citation:||Journal of Geometry and Physics, 2020; 156:1-17|
|Guo Chuan Thiang|
|Abstract:||We prove that Chern insulators have topologically protected edge states which not only propagate unidirectionally along a straight line boundary, but also swerve around arbitrary-angled corners and geometric imperfections of the material boundary. This is a physical manifestation of the index theory of certain semigroup operator algebras.|
|Keywords:||Topological insulators; toeplitz algebras; K-theory; bulk-edge correspondence|
|Rights:||© 2020 Elsevier B.V. All rights reserved.|
|Appears in Collections:||Aurora harvest 8|
Mathematical Sciences publications
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