Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fragile ground state and rigid field-induced structures in zigzag ladder
  compound BaDy2O4   We report on a sequence of field-induced transitions in the zigzag ladder
compound BaDy2O4 studied with powder neutron diffraction and magnetisation
measurements. In agreement with the previously published results, the low
temperature zero-field structure is characterised by two half-integer
propagation vectors, k1=[1/2 0 1/2] and k2= 1/2 1/2 1/2]. However, on
application of an external magnetic field, the Bragg peaks corresponding to the
zero-field structure lose their intensity rather rapidly and disappear
completely in a field of 2.5 kOe. In the intermediate fields, 2.5 to 22.5 kOe,
new peaks are observed characterised by the propagation vector k0=[0 0 1/3]
corresponding to an up-up-down (uud) structure as well k=0 ferromagnetic peaks.
This regime of fields corresponds to a pronounced plateau in the magnetisation
curve. Remarkably, the uud structure survives heating to at least 1.4 K, three
times higher temperature than the TN of 0.48 K for the zero-field structure.
Above 22.5 kOe, the k0 peaks disappear while the k = 0 peaks gain significant
intensity indicating an increase in the polarisation of the system. The
analysis of the intensities of the field-induced reflections allows for a clear
identification of the magnetic structures in both the intermediate and high
field regimes.

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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: cs
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
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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: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys