Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum spin chain as a potential realization of the Nersesyan-Tsvelik
  model   It is well established that long-range magnetic order is suppressed in
magnetic systems whose interactions are low-dimensional. The prototypical
example is the S-1/2 Heisenberg antiferromagnetic chain (S-1/2 HAFC) whose
ground state is quantum critical. In real S-1/2 HAFC compounds interchain
coupling induces long-range magnetic order although with a suppressed ordered
moment and reduced N\'eel temperature compared to the Curie-Weiss temperature.
Recently, it was suggested that order can also be suppressed if the interchain
interactions are frustrated, as for the Nersesyan-Tsvelik model. Here, we study
the new S-1/2 HAFC, (NO)[Cu(NO3)3]. This material shows extreme suppression of
order which furthermore is incommensurate revealing the presence of frustration
consistent with the Nersesyan-Tsvelik model.

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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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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: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ph
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga