Excess charges as a probe of one-dimensional topological crystalline insulating phases
Mesoscale and Nanoscale Physics
2017-12-27 v2
Abstract
We show that in conventional one-dimensional insulators excess charges created close to the boundaries of the system can be expressed in terms of the Berry phases associated with the electronic Bloch wave functions. Using this correspondence, we uncover a link between excess charges and the topological invariants of the recently classified one-dimensional topological phases protected by spatial symmetries. Excess charges can be thus used as a probe of crystalline topologies.
Keywords
Cite
@article{arxiv.1710.06233,
title = {Excess charges as a probe of one-dimensional topological crystalline insulating phases},
author = {Guido van Miert and Carmine Ortix},
journal= {arXiv preprint arXiv:1710.06233},
year = {2017}
}