Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for Undoped Weyl Semimetal Charge Transport in
  $Y_{2}Ir_{2}O_{7}$   Weyl fermions scattering from a random Coulomb potential are predicted to
exhibit resistivity versus temperature $\rho \space \alpha \space T^{-4}$ in a
single particle model. Here we show that, in closed environment-grown
polycrystalline samples of $Y_{2}Ir_{2}O_{7}$, $\rho = \rho_{0} T^{-4}$ over
four orders of magnitude in $\rho$. While the measured prefactor, $\rho_{0}$,
is obtained from the model using reasonable materials parameters, the $T^{-4}$
behavior extends far beyond the model's range of applicability. In particular,
the behavior extends into the low-temperature, high-resistivity region where
the Ioffe-Regel parameter, $k_{T} \ell \ll 2\pi$. Strong on-site Coulomb
correlations, instrumental for predicting a Weyl semimetal state in
$Y_{2}Ir_{2}O_{7}$, are the possible origin of such "bad" Weyl semimetal
behavior.

10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg