Light–matter interaction in van der Waals hetero-structures

2020/02/19 by Thorsten Deilmann, Michael Rohlfing, Ursula Wurstbauer
Chemistry · Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Chemical physics #Chemistry #Condensed matter physics #Exciton #Graphene research and applications #Materials science #Molecule #Monolayer #Nanotechnology #Perovskite Materials and Applications #Physics #Stacking #Transition metal #Van der Waals radius #Van der Waals strain #cond-mat.mes-hall #van der Waals force

paper · pdf · doi:10.1088/1361-648x/ab8661

published as J. Phys.: Condens. Matter 32, 333002 (2020) · 14 pages, 6 figures

arxiv created 2020/02/19 · openalex publication_date 2020/04/03 · arxiv updated 2020/06/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

Even if individual two-dimensional materials own various interesting and unexpected properties, the stacking of such layers leads to van der Waals solids which unite the characteristics of two dimensions with novel features originating from the interlayer interactions. In this topical review, we cover fabrication and characterization of van der Waals hetero-structures with a focus on hetero-bilayers made of monolayers of semiconducting transition metal dichalcogenides. Experimental and theoretical techniques to investigate those hetero-bilayers are introduced. Most recent findings focusing on different transition metal dichalcogenides hetero-structures are presented and possible optical transitions between different valleys, appearance of moiré patterns and signatures of moiré excitons are discussed. The fascinating and fast growing research on van der Waals hetero-bilayers provide promising insights required for their application as emerging quantum-nano materials.

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