Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flatbands and Mechanical Deformation Effects in the Moir\'e Superlattice
  of MoS$_2$-WSe$_2$ Heterobilayers   It has recently been shown that quantum-confined states can appear in
epitaxially grown van der Waals material heterobilayers without a rotational
misalignment ($\theta=0^\circ$), associated with flat bands in the Brillouin
zone of the moir\'e pattern formed due to the lattice mismatch of the two
layers. Peaks in the local density of states and confinement in a
MoS$_2$/WSe$_2$ system was qualitatively described only considering local
stacking arrangements, which cause band edge energies to vary spatially. In
this work, we report the presence of large in-plane strain variation across the
moir\'e unit cell of a $\theta=0^\circ$ MoS$_2$/WSe$_2$ heterobilayer, and show
that inclusion of strain variation and out-of-plane displacement in density
functional theory calculations greatly improves their agreement with the
experimental data. We further explore the role of twist-angle by showing
experimental data for a twisted MoS$_2$/WSe$_2$ heterobilayer structure with
twist angle of $\theta=15^\circ$, that exhibits a moir\'e pattern but no
confinement.

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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: supr-con
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The categories of this paper are: math
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg