Interaction induced topological protection in one-dimensional conductors

Nikolaos Kainaris; Raul A. Santos; D. B. Gutman; Sam T. Carr

doi:10.1002/prop.201600054

Interaction induced topological protection in one-dimensional conductors

Nikolaos Kainaris, Raul A. Santos, D. B. Gutman, Sam T. Carr

Department of Physics - at Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

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.

Original language	English
Article number	1600054
Journal	Fortschritte der Physik
Volume	65
Issue number	6-8
DOIs	https://doi.org/10.1002/prop.201600054
State	Published - Jun 2017

Bibliographical note

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Funding

The authors acknowledge support from the Israeli Ministry of Science and the Carl-Zeiss-Stiftung.

Funders	Funder number
Israeli Ministry of Science
Carl-Zeiss-Stiftung

Keywords

Disorder
One dimensional
Strongly correlated electrons
Topological insulator

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10.1002/prop.201600054

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Interaction induced topological protection in one-dimensional conductors

Abstract

Bibliographical note

Funding

Keywords

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