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Interaction induced topological protection in one-dimensional conductors

Kainaris, Nikolaos, Santos, Raul A., Gutman, D. B., Carr, Sam T. (2017) Interaction induced topological protection in one-dimensional conductors. Fortschritte der Physik, 65 (6-8). Article Number 1600054. ISSN 0015-8208. (doi:10.1002/prop.201600054) (KAR id:72586)

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We discuss two one?dimensional model systems – the first is a single channel quantum wire with Ising anisotropy, while the second is two coupled helical edge states. We show that the two models are governed by the same low energy effective field theory, and interactions drive both systems to exhibit phases which are metallic, but with all single particle excitations gapped. We show that such states may be either topological or trivial; in the former case, the system demonstrates gapless end states, and insensitivity to disorder.

Item Type: Article
DOI/Identification number: 10.1002/prop.201600054
Uncontrolled keywords: Physics of Quantum Materials
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Sam Carr
Date Deposited: 15 Feb 2019 19:45 UTC
Last Modified: 20 Oct 2020 10:04 UTC
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