Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Properties of Charged Stripes in La_{2-x}Sr_xCuO_4   Inelastic light-scattering spectra of underdoped ${\rm La_{2-x}Sr_xCuO_4}$
(LSCO) single crystals are presented which provide direct evidence of the
formation of quasi one-dimensional charged structures in the two-dimensional
$\rm CuO_2$ planes. The ``stripes'' manifest themselves in a Drude-like peak at
low energies and temperatures. The selection rules allow us to determine the
orientation to be along the diagonals at $x=0.02$ and along the principal axes
at $x=0.10$. The electron-lattice interaction determines the correlation length
which turns out to be larger in compound classes with lower superconducting
transition temperatures. Temperature is the only scale of the response at
different doping levels demonstrating the importance of quantum critical
behavior.

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The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys