Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of mass contrast in alloy phonon scattering   We have investigated the effect of mass contrast on alloy phonon scattering
in mass-substituted Lennard-Jones crystals. By calculating the mass-difference
phonon scattering rate using a modal analysis method based on molecular
dynamics, we have identified the applicability and limits of the widely-used
mass-difference perturbation model in terms of magnitude and sign of the mass
difference. The result of a phonon -mode-dependent analysis reveals that the
critical phonon frequency, above which the mass-difference perturbation theory
fails, decreases with the magnitude of the mass difference independently of its
sign. This gives rise to a critical mass contrast, above which the
mass-difference perturbation model noticeably underestimates the lattice
thermal conductivity.

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The categories of this paper are: econ
29
The categories of this paper are: funct-an
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The categories of this paper are: math
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
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The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
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The categories of this paper are: q-bio
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
19
The categories of this paper are: eess