Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Understanding the High Temperature Thermoelectric Properties of
  La$_{0.82}$Ba$_{0.18}$CoO$_{3}$ Compound using DFT+U Method   Normally, understanding the temperature dependent transport properties of
strongly correlated electron systems remains challenging task due to complex
electronic structure and its variations (around E$_{F}$) with temperature.
Here, we report the applicability of DFT+U in explaining thermopower ($\alpha$)
and electrical conductivity ($\sigma$) in high temperature region. We have
measured temperature dependent $\alpha$ and $\sigma$ in the 300-600 K range.
The non-monotonic temperature dependent behavior of $\alpha$ and metallic
behavior of $\sigma$ were observed. The value of $\alpha$ at 300 K was
$\sim$15.80 $\mu$V/K and it decreases upto $\sim$477 K ($\sim$11.6 $\mu$V/K)
and it further increases with temperature to the $\sim$14.8 $\mu$V/K at 600 K,
whereas the values of $\sigma$ were found to be $\sim$1.42 $\times$10$^{5}$
$\Omega$$^{-1}$ m$^{-1}$ and $\sim$0.20 $\times$10$^{5}$ $\Omega$$^{-1}$
m$^{-1}$ at 300 and 600 K, respectively. Combining the WIEN2k and BoltzTraP
code, the electronic structure and temperature dependent transport coefficients
were calculated. The ferromagnetic ground state electronic structure with
half-metallic character obtained from the DFT+U calculations, U = 3.1 eV,
provides better explanation of high-temperature transport behavior. Two current
model was used for calculation of $\alpha$ and $\sigma$ where the temperature
dependent values of relaxation time ($\tau$), almost linear for up-spin,
$\tau$$_{up}$, and non-linear for dn-spin, $\tau$$_{dn}$, were used and
estimated values were found to be in good agreement with experimentally
reported values.

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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: math
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom