1. Opportunities and Challenges in Twisted Bilayer Graphene: A Review
- Author
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Hyunmin Kim and Amol R. Nimbalkar
- Subjects
Superconductivity ,Fabrication ,Magic angle ,Materials science ,Superlattice ,Stacking ,Physics::Optics ,Nanotechnology ,02 engineering and technology ,Review ,01 natural sciences ,lcsh:Technology ,law.invention ,law ,0103 physical sciences ,Monolayer ,Physics::Atomic and Molecular Clusters ,Electrical and Electronic Engineering ,010306 general physics ,Graphene ,lcsh:T ,021001 nanoscience & nanotechnology ,Twisted bilayer graphene ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,0210 nano-technology ,Bilayer graphene ,van Hove singularities - Abstract
Highlights This article presents an overview of twisted bilayer graphene (tBLG) on their fabrication techniques and twisting angle-dependent properties.The properties of tBLG can be controlled by controlling the twisting angle between two graphene sheets., Two-dimensional (2D) materials exhibit enhanced physical, chemical, electronic, and optical properties when compared to those of bulk materials. Graphene demands significant attention due to its superior physical and electronic characteristics among different types of 2D materials. The bilayer graphene is fabricated by the stacking of the two monolayers of graphene. The twisted bilayer graphene (tBLG) superlattice is formed when these layers are twisted at a small angle. The presence of disorders and interlayer interactions in tBLG enhances several characteristics, including the optical and electrical properties. The studies on twisted bilayer graphene have been exciting and challenging thus far, especially after superconductivity was reported in tBLG at the magic angle. This article reviews the current progress in the fabrication techniques of twisted bilayer graphene and its twisting angle-dependent properties. more...
- Published
- 2020
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