Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-energy spin excitations in the molecular magnetic cluster V15   We report an Inelastic Neutron Scattering (INS) study of the fully deuterated
molecular compound K6[V15As6O42].9(D2O) (V15). Due to geometrical frustration,
the essential physics at low temperatures of the V15 cluster containing 15
coupled V4+ (S=1/2) is determined by three weakly coupled spin-1/2 on a
triangle. The INS spectra at low-energy allow us to directly determine the
effective exchange coupling J0 = 0.211 meV within the triangle and the gap 2
\Delta = 0.035(2)meV between the two spin-1/2 doublets of the ground state.
Results are discussed in terms of deviations from trigonal symmetry and
Dzyaloshinskii-Moriya (DM) interactions.

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The categories of this paper are: ao-sci
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: math
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ph