Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Robust Room-Temperature Quantum Spin Hall Effect in
  Methyl-functionalized InBi honeycomb film   Two-dimensional (2D) group-III-V honeycomb films have attracted significant
interest for their potential application in fields of quantum computing and
nanoeletronics. Searching for 2D III-V films with high structural stability and
large-gap are crucial for the realizations of dissipationless transport edge
states using quantum spin Hall (QSH) effect. Based on first-principles
calculations, we predict that the methyl-functionalized InBi monolayer
(InBiCH3) has no dynamic instability, and host a QSH state with a band gap as
large as 0.29 eV, exhibiting an interesting electronic behavior viable for
room-temperature applications. The topological characteristic is confirmed by
s-pxy bands inversion, topological invariant Z2 number, and the time-reversal
symmetry protected helical edge states. Noticeably, the QSH states are tunable
and robust against the mechanical strain, electric field and different levels
of methyl coverages. We also find that InBiCH3 supported on h-BN substrate
maintains a nontrivial QSH state, which harbors the edge states lying within
the band gap of substrate. These findings demonstrate that the
methyl-functionalized III-V films may be a good QSH platform for device design
and fabrication in spintronics.

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The categories of this paper are: math
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph