Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spontaneous symmetry breaking by charge stripes in the high-pressure
  phase of superconducting La(1.875)Ba(0.125)CuO(4)   In those cases where charge stripe order has been observed in cuprates, the
crystal structure is such that the average rotational symmetry of the CuO2
planes is reduced from four-fold to two-fold. As a result, one could argue that
the reduced lattice symmetry is essential to the existence of stripe order. We
use pressure to restore the average four-fold symmetry in a single crystal of
La(1.875)Ba(0.125)CuO(4), and show by x-ray diffraction that charge stripe
order still occurs. Thus, electronically-driven stripe order can spontaneously
break the lattice symmetry.

27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess