Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exchange energies of Kapellasite from high-temperature series analysis
  of the kagome lattice J1-J2-Jd-Heisenberg model   We present a method to build magnetic models for insulators based on
high-temperature expansions by fitting both the magnetic susceptibility and the
low temperature specific heat data. It is applied to the frustrated magnet
kapellasite (Cu3Zn(OH)6Cl2) with the J1-J2-Jd-Heisenberg model on the kagome
lattice. Experimental data are reproduced with a set of "competing" exchange
energies closed to J1 = -12K, J2= -4K and Jd=15.6K, where Jd is the third
neighbor exchange energy across the hexagon. Strong constrains between these
exchange energies are established. These values confirm the results of B.
F{\aa}k et al. (Phys. Rev. Lett., 109, 037208 (2012)) regarding the location of
kapellasite in the {\it cuboc2} phase of the Heisenberg model. The quality and
limits of this modeling are discussed.

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The categories of this paper are: funct-an
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
2
The categories of this paper are: math
9
The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex