Multiterminal conductance of a floquet topological insulator

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We report on simulations of the dc conductance and quantum Hall response of a Floquet topological insulator using Floquet scattering theory. Our results reveal that laser-induced edge states lead to quantum Hall plateaus once imperfect matching with the nonilluminated leads is lessened. The magnitud...

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Autores principales: Foa Torres, Luis Eduardo Francisco, Pérez Piskunow, Pablo Matías, Balseiro, Carlos A., Usaj, Gonzalo
Formato: article
Lenguaje:Inglés
Publicado: 2021
Materias:
Graphene
Topological insulators
Floquet theory
Acceso en línea:http://hdl.handle.net/11086/20361
https://doi.org/10.1103/PhysRevLett.113.266801
Aporte de:
Repositorio Digital Universitario (UNC) de Universidad Nacional de Córdoba
id I10-R14111086-20361
record_format dspace
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-141
collection Repositorio Digital Universitario (UNC)
language Inglés
topic Graphene
Topological insulators
Floquet theory
spellingShingle Graphene
Topological insulators
Floquet theory
Foa Torres, Luis Eduardo Francisco
Pérez Piskunow, Pablo Matías
Balseiro, Carlos A.
Usaj, Gonzalo
Multiterminal conductance of a floquet topological insulator
topic_facet Graphene
Topological insulators
Floquet theory
description We report on simulations of the dc conductance and quantum Hall response of a Floquet topological insulator using Floquet scattering theory. Our results reveal that laser-induced edge states lead to quantum Hall plateaus once imperfect matching with the nonilluminated leads is lessened. The magnitude of the Hall plateaus, however, is not directly related to the number and chirality of all the edge states at a given energy, as usual. Instead, the plateaus are dominated by those edge states adding to the time-averaged density of states. Therefore, the dc quantum Hall conductance of a Floquet topological insulator is not directly linked to topological invariants of the full Floquet bands.
format article
author Foa Torres, Luis Eduardo Francisco
Pérez Piskunow, Pablo Matías
Balseiro, Carlos A.
Usaj, Gonzalo
author_facet Foa Torres, Luis Eduardo Francisco
Pérez Piskunow, Pablo Matías
Balseiro, Carlos A.
Usaj, Gonzalo
author_sort Foa Torres, Luis Eduardo Francisco
title Multiterminal conductance of a floquet topological insulator
title_short Multiterminal conductance of a floquet topological insulator
title_full Multiterminal conductance of a floquet topological insulator
title_fullStr Multiterminal conductance of a floquet topological insulator
title_full_unstemmed Multiterminal conductance of a floquet topological insulator
title_sort multiterminal conductance of a floquet topological insulator
publishDate 2021
url http://hdl.handle.net/11086/20361
https://doi.org/10.1103/PhysRevLett.113.266801
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AT balseirocarlosa multiterminalconductanceofafloquettopologicalinsulator
AT usajgonzalo multiterminalconductanceofafloquettopologicalinsulator
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