Living on the edge: Topology, electrostatics, and disorder
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Título: | Living on the edge: Topology, electrostatics, and disorder |
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Autor/es: | van den Berg, Tineke L. | Calvo, M. Reyes | Bercioux, Dario |
Grupo/s de investigación o GITE: | Grupo de Nanofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | Edge | Topology | Electrostatics | Disorder |
Área/s de conocimiento: | Física de la Materia Condensada |
Fecha de publicación: | 19-feb-2020 |
Editor: | American Physical Society |
Cita bibliográfica: | Physical Review Research. 2020, 2: 013171. https://doi.org/10.1103/PhysRevResearch.2.013171 |
Resumen: | We address the coexistence of massless and massive topological edge states at the interface between two materials with different topological phases. We modify the well-known Bernevig-Hughes-Zhang model to introduce a smooth function describing the band inversion and the band bending due to electrostatic effects between the bulk of the quantum well and the vacuum. Within this minimal model we identify distinct parameter sets that can lead to the coexistence of the two types of edge states and that determine their number and characteristics. We propose several experimental setups that could demonstrate their presence in two-dimensional topological systems, as well as ways to regulate or tune the contribution of the massive edge states to the conductance of associated electronic devices. Our results suggest that such states may also be present in novel two-dimensional van der Waals topological materials. |
Patrocinador/es: | The work of T.L.v.d.B. and D.B. was supported by the Spanish Ministerio de Economía y Competitividad (MINECO) through Project No. FIS2014-55987-P, by Spanish Ministerio de Ciecia, Innovation y Universidades (MICINN) through Project No. FIS2017-82804-P, and by the Transnational Common Laboratory Quantum-ChemPhys. M.R.C. acknowledges funding from the Spanish Government through Project No. MAT2017-88377-C2-2-R (AEI/FEDER UE) and the Generalitat Valenciana through Grant No. Cidegent2018004. |
URI: | http://hdl.handle.net/10045/111911 |
ISSN: | 2643-1564 |
DOI: | 10.1103/PhysRevResearch.2.013171 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1103/PhysRevResearch.2.013171 |
Aparece en las colecciones: | INV - Grupo de Nanofísica - Artículos de Revistas |
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van-den-Berg_etal_2020_PhysRevRes.pdf | 1,36 MB | Adobe PDF | Abrir Vista previa | |
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