Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kubo-Bastin approach for the spin Hall conductivity of decorated
  graphene   Theoretical predictions and recent experimental results suggest one can
engineer spin Hall effect in graphene by enhancing the spin-orbit coupling in
the vicinity of an impurity. We use a Chebyshev expansion of the Kubo-Bastin
formula to compute the spin conductivity tensor for a tight-binding model of
graphene with randomly distributed impurities absorbed on top of carbon atoms.
We model the impurity-induced spin-orbit coupling with a graphene-only
Hamiltonian that takes into account three different
contributions~\cite{Gmitra2013} and show how the spin Hall and longitudinal
conductivities depend on the strength of each spin-orbit coupling and the
concentration of impurities. Additionally, we calculate the real-space
projection of the density of states in the vicinity of the Dirac point for
single and multiple impurities and correlate these results with the
conductivity calculations.

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The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
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The categories of this paper are: math
29
The categories of this paper are: funct-an
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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: comp-gas
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The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph