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Article overview
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Progress on band structure engineering of twisted bilayer and two-dimensional moiré heterostructures | | Wei Yao
; Martin Aeschlimann
; Shuyun Zhou
; | | Date: |
30 Sep 2020 | | Abstract: | Artificially constructed van der Waals heterostructures (vdWHs) provide an
ideal platform for realizing emerging quantum phenomena in condensed matter
physics. Two methods for building vdWHs have been developed: stacking
two-dimensional (2D) materials into a bilayer structure with different lattice
constants, or with different orientations. The interlayer coupling stemming
from commensurate or incommensurate superlattice pattern plays an important
role in vdWHs for modulating the band structures and generating new electronic
states. In this article, we review a series of novel quantum states discovered
in two model vdWH systems -- graphene/hexagonal boron nitride (hBN)
hetero-bilayer and twisted bilayer graphene (tBLG), and discuss how the
electronic structures are modified by such stacking and twisting. We also
provide perspectives for future studies on hetero-bilayer materials, from which
an expansion of 2D material phase library is expected. | | Source: | arXiv, 2009.14584 | | Services: | Forum | Review | PDF | Favorites | |
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