Magic in twisted transition metal dichalcogenide bilayers

The long-wavelength moiré superlattices in twisted 2D structures have emerged as a highly tunable platform for strongly correlated electron physics. We study the moiré bands in twisted transition metal dichalcogenide homobilayers, focusing on WSe 2 , at small twist angles using a combination of firs...

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Veröffentlicht in:	Nature communications 2021-11, Vol.12 (1), p.6730-6730, Article 6730
Hauptverfasser:	Devakul, Trithep, Crépel, Valentin, Zhang, Yang, Fu, Liang
Format:	Artikel
Sprache:	eng
Schlagworte:	639/766/119/1000/1018 639/766/119/2792/4128 639/766/119/2794 639/766/119/995 Chalcogenides CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Continuum modeling Density functional theory Electromagnetism electronic properties and materials First principles Hartree approximation Humanities and Social Sciences Insulators multidisciplinary Physics quantum Hall Quantum Hall effect Science Science (multidisciplinary) Superlattices topological insulators Transition metal compounds two-dimensional materials Unit cell
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Beschreibung
Zusammenfassung:	The long-wavelength moiré superlattices in twisted 2D structures have emerged as a highly tunable platform for strongly correlated electron physics. We study the moiré bands in twisted transition metal dichalcogenide homobilayers, focusing on WSe 2 , at small twist angles using a combination of first principles density functional theory, continuum modeling, and Hartree-Fock approximation. We reveal the rich physics at small twist angles θ
ISSN:	2041-1723 2041-1723
DOI:	10.1038/s41467-021-27042-9