Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stripe Conductivity in La(1.775)Sr(0.225)NiO(4)   We report Raman light-scattering and optical conductivity measurements on a
single crystal of La(1.775)Sr(0.225)NiO(4) which exhibits incommensurate
charge-stripe order. The extra phonon peaks induced by stripe order can be
understood in terms of the energies of phonons that occur at the charge-order
wave vector, Q_c. A strong Fano antiresonance for a Ni-O bond-stretching mode
provides clear evidence for finite dynamical conductivity within the charge
stripes.

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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: math-ph