Evidence for a topological excitonic insulator in InAs/GaSb bilayers

Weakly bound electron–hole pairs may condensate in two-dimensional systems, but experimental evidence has been lacking. Here, Du et al. report optical spectroscopic and electronic transport evidences for the formation of an excitonic insulator gap in topological InAs/GaSb quantum wells.

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Autores principales: Lingjie Du, Xinwei Li, Wenkai Lou, Gerard Sullivan, Kai Chang, Junichiro Kono, Rui-Rui Du
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/ed53359e648e4bbe8b30c0e8a80bfd98
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Sumario:Weakly bound electron–hole pairs may condensate in two-dimensional systems, but experimental evidence has been lacking. Here, Du et al. report optical spectroscopic and electronic transport evidences for the formation of an excitonic insulator gap in topological InAs/GaSb quantum wells.