Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hourglass dispersion in overdoped single-layered manganites   The excitation spectrum in single-layered Nd(0.33)Sr(1.67)MnO4 and
Pr(0.33)Ca(1.67)MnO4 resembles the hourglass-like excitation dispersion seen in
various cuprates superconductors. However, our spin-wave dispersion in
Pr(0.33)Ca(1.67)MnO4, which exhibits a large correlation length of the magnetic
order, showing outward-dispersing branches starting from the incommensurate
zone-centres. The magnetic correlation length is identified as the decisive
parameter to suppress this branches and generating an correct hourglass shape.

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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
3
The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex