Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From hidden metal-insulator transition to Planckian-like dissipation by
  tuning disorder in a nickelate   Heavily oxygen deficient NdNiO$_3$ (NNO) films, which are insulating due to
electron localization, contain pristine regions that undergo a hidden
metal-insulator transition. Increasing oxygen content increases the
connectivity of the metallic regions and the metal-insulator transition is
first revealed, upon reaching the percolation threshold, by the presence of
hysteresis. Only upon further oxygenation is the global metallic state (with a
change in the resistivity slope) eventually achieved. It is shown that
sufficient oxygenation leads to linear temperature dependence of resistivity in
the metallic state, with a scattering rate directly proportional to
temperature. Despite the known difficulties to establish the proportionality
constant, the experiments are consistent with a relationship 1/$\tau$= $\alpha
k_B T/\hbar$, with $\alpha$ not far from unity. These results could provide
experimental support for recent theoretical predictions of disorder in a
two-fluid model as a possible origin of Planckian dissipation.

24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn