Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Carrier Transport in Magnesium Diboride: Role of Nano-inclusions   Anisotropic-gap and two-band effects smear out the superconducting transition
(Tc) in literature reported thermal conductivity of MgB2, where large
electronic contributions also suppress anomaly-manifestation in their
negligible phononic-parts. Present thermal transport results on scarcely
explored specimens featuring nano-inclusions exhibit a small but clear
Tc-signature, traced to relatively appreciable phononic conduction, and its
dominant electronic-scattering. The self-formed MgO as extended defects
strongly scatter the charge carriers and minutely the phonons with their
longer-mean-free-path near Tc. Conversely, near room temperature, the
shorter-dominant-wavelength phonon's transport is hugely affected by these
nanoparticles, undergoing ballistic to diffusive crossover and eventually
entering the Ioffe-Regel mobility threshold regime.

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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci