Space group constraints on weak indices in topological insulators

Lattice translation symmetry gives rise to a large class of "weak" topological insulators (TIs), characterized by translation-protected gapless surface states and dislocation bound states. In this work we show that space group symmetries lead to constraints on the weak topological indices...

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Bibliographic Details
Main Authors: Varjas, D, de Juan Sanz, F, Lu, Y
Format: Journal article
Published: American Physical Society 2017