Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Spin Fluctuations in a High-Tc Parent Compound Using
  Resonant Inelastic X-ray Scattering   We report the first observation of soft-x-ray scattering from spin
fluctuations in a high-Tc parent compound. An antiferromagnetic charge transfer
insulator, CaCuO2, was irradiated by Cu M-edge soft x-rays. Ultra-high
resolution measurements of scattered intensity revealed magnon-magnon
excitations, due to spin exchange scattering, as low-energy loss features. The
process is analogous to optical Raman scattering. The spectra provide the first
measurement of the two-magnon excitation energy and the antiferromagnetic
exchange parameter in infinite-layer CaCuO2. The results reveal resonant
inelastic soft x-ray scattering as a novel probe of the spin dynamics in
cuprates.

21
The categories of this paper are: adap-org
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The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
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The categories of this paper are: econ
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: eess
13
The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: stat
6
The categories of this paper are: astro-ph