Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First principles study and empirical parametrization of twisted bilayer
  MoS2 based on band-unfolding   We explore the band structure and ballistic electron transport in twisted
bilayer $\textrm{MoS}_2$ using Density Functional Theory (DFT). The sphagetti
like bands are unfolded to generate band structures in the primitive unit cell
of the original un-twisted $\textrm{MoS}_2$ bilayer and projected onto an
individual layer. The corresponding twist angle dependent indirect bandedges
are extracted from the unfolded band structures. Based on a comparison within
the same primitive unit cell, an efficient two band effective mass model for
indirect conduction and valence valleys is created and parameterized by fitting
the unfolded band structures. With the two band effective mass model, transport
properties - specifically, we calculate the ballistic transmission in
arbitrarily twisted bilayer $\textrm{MoS}_2$.

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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom