Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decoding the DC and optical conductivities of disordered MoS$_{2}$
  films: an inverse problem   To calculate the conductivity of a material having full knowledge of its
composition is a reasonably simple task. To do the same in reverse, i.e., to
find information about the composition of a device from its conductivity
response alone, is very challenging and even more so in the presence of
disorder. An inversion methodology capable of decoding the information
contained in the conductivity response of disordered structures has been
recently proposed but despite claims of generality and robustness, the method
has only been used with 2D systems possessing relatively simple electronic
structures. Here we put these claims to the test and generalise the inversion
method to the case of monolayer MoS$_2$, a material whose electronic structure
is far more complex and elaborate. Starting from the spectral function that
describes the DC conductivity of a disordered sample of a single layered
MoS$_2$ containing a small concentration of randomly dispersed vacancies, we
are able to invert the signal and find the exact composition of defects with an
impressive degree of accuracy. Remarkably, equally accurate results are
obtained with the optical conductivity. This is indicative of a methodology
that is indeed suitable to extract composition information from different 2D
materials, regardless of their electronic structure complexity. Calculated
conductivity results were used as a proxy for their experimental counterpart
and were obtained with an efficient quantum transport code (KITE) based on a
real-space multi-orbital tight-binding model with parameters generated by
density functional theory.

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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: econ