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cond-mat.str-el2012★ 19 cited
The Z2-anomaly and boundaries of topological insulators
Zohar Ringel, Ady Stern
We study the edge and surface theories of topological insulators from the perspective of anomalies and identify a novel Z2-anomaly associated with charge conservation. The anomaly…
cond-mat.str-el2012★ 1 cited
Persistence of phase boundaries between a topological and trivial Z2 insulator
Zohar Ringel, Ehud Altman
When time reversal symmetry is present there is a sharp distinction between topological and trivial band insulators which ensures that, as parameters are varied, these phases are s…