Topological phase transition in chiral graphene nanoribbons: from edge bands to end states

Graphene nanoribbons are potential systems for engineering topological phases of matter, but the pre-required gapped phases are difficult to find. Here, the authors show that chiral graphene nanoribbons undergo a transition from metallic to topological insulators, and then to trivial band insulators...

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Autores principales: Jingcheng Li, Sofia Sanz, Nestor Merino-Díez, Manuel Vilas-Varela, Aran Garcia-Lekue, Martina Corso, Dimas G. de Oteyza, Thomas Frederiksen, Diego Peña, Jose Ignacio Pascual
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/62a44c2fc3984ab5b969446ac9265f99
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Sumario:Graphene nanoribbons are potential systems for engineering topological phases of matter, but the pre-required gapped phases are difficult to find. Here, the authors show that chiral graphene nanoribbons undergo a transition from metallic to topological insulators, and then to trivial band insulators as they are narrowed down to nanometer widths.