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arXiv · 1802.00715

Dislocation charges reveal two-dimensional topological crystalline invariants

Guido van Miert·Carmine Ortix
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Abstract

We identify a one-to-one correspondence between the charge localized around a dislocation characterized by a generic Burgers vector and the Berry phase associated with the electronic Bloch waves of two-dimensional crystalline insulators. Using this correspondence, we reveal a link between dislocation charges and the topological invariants of inversion and rotation symmetry-protected insulating phases both in the absence and in the presence of time-reversal symmetry. Our findings demonstrate that dislocation charges can be used as generic probes of crystalline topologies.

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Guido van Miert, Carmine Ortix. 2018-05-21. Dislocation charges reveal two-dimensional topological crystalline invariants. https://doi.org/10.1103/physrevb.97.201111

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