Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absence of charge-density-wave sliding in epitaxial charge-ordered
  Pr0.48Ca0.52MnO3 films   For an epitaxial Pr0.48Ca0.52MnO3 film on NdGaO3, we use transmission
electron microscopy to observe a "charge-ordered" superlattice along the
in-plane direction a. The same film shows no electrical signatures of charge
order. The in-plane electrical anisotropy (rho)a/(rho)c = 28 is constant, and
there is no evidence of sliding charge density waves up to the large field of
~10^3 V/cm.

8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci