Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Negative-chirality order in $S=1/2$ kagome antiferromagnet
  CdCu$_{3}$(OH)$_{6}$(NO$_{3}$)$_{2}\cdot $H$_{2}$O   The neutron diffraction and nuclear magnetic resonance (NMR) measurements
have been used to microscopically analyze the magnetic structure in the $S =
1/2$ kagome antiferromagnet CdCu$_{3}$(OH)$_{6}$(NO$_{3}$)$_{2}\cdot $H$_{2}$O.
Below the magnetic ordering temperature $T_N\simeq 4$ K, magnetic Bragg
reflections at (110) and (100) were found in the neutron diffraction pattern,
which suggests a $q=0$ magnetic structure. Furthermore, the vector spin
chirality for the $q=0$ structure was successfully identified from the internal
field direction obtained by the $^{14}$N-NMR measurement. Our findings point to
a chirality-ordered magnetic structure with negative vector chirality and
$\langle 100 \rangle$ anisotropy.

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The categories of this paper are: cs
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: physics
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
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The categories of this paper are: astro-ph
19
The categories of this paper are: eess