Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First-principles study on the electrical resistivity in zirconium
  dichalcogenides with multi-valley bands: mode-resolved analysis of
  electron-phonon scattering   Based on the first-principles calculations, we study the electron-phonon
scattering effect on the resistivity in the zirconium dichalcogenides,
$\text{Zr}_{}\text{S}_{2}$ and $\text{Zr}_{}\text{Se}_{2}$, whose electronic
band structures possess multiple valleys at conduction band minimum. The
computed resistivity exhibits non-linear temperature dependence, especially for
$\text{Zr}_{}\text{S}_{2}$, which is also experimentally observed on some TMDCs
such as $\text{Ti}_{}\text{S}_{2}$ and $\text{Zr}_{}\text{Se}_{2}$. By
performing the decomposition of the contributions of scattering processes, we
find that the intra-valley scattering by acoustic phonons mainly contributes to
the resistivity around 50 K. Moreover, the contribution of the intra-valley
scattering by optical phonons becomes dominant even above 80 K, which is a
sufficiently low temperature compared with their frequencies. By contrast, the
effect of the inter-valley scattering is found to be not significant. Our study
identifies the characteristic scattering channels in the resistivity of the
zirconium dichalcogenides, which provides critical knowledge to microscopically
understand electron transport in systems with multi-valley band structure.

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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: nlin
30
The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
1
The categories of this paper are: cs