Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetization Step in Spatially Distorted Heisenberg Kagome
  Antiferromagnets   Motivated by a recent experiment on volborthite, a typical spin-$1/2$
antiferromagnet with a kagom\'{e} lattice structure, we study the magnetization
process of a classical Heisenberg model on a spatially distorted kagom\'{e}
lattice using the Monte Carlo (MC) method. We find a distortion-induced
magnetization step at low temperatures and low magnetic fields. The magnitude
of this step is given by $\Delta m_z=\left|1-\alpha\right|/3\alpha$ at zero
temperature, where $\alpha$ denotes the spatial anisotropy in exchange
constants. The magnetization step signals a first-order transition at low
temperatures, between two phases distinguished by distinct and well-developed
short-range spin correlations, one characterized by spin alignment of a local
$120^{\circ}$ structure with a $\sqrt{3}\times\sqrt{3}$ period, and the other
by a partially spin-flopped structure. We point out the relevance of our
results to the unconventional steps observed in volborthite.

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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: atom-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int