Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for the S=9 excited state in Mn12-bromoacetate measured by
  electron paramagnetic resonance   We present high-frequency high-field electron paramagnetic resonance (EPR)
measurements on the dodecanuclear manganese complex Mn12-bromoacetate
(Mn12-BrAc). The crystal-field parameters are found to be identical to those of
the original compound Mn12-acetate (Mn12-Ac). A detailed analysis of the
frequency and temperature dependence of anomalous peaks observed in the EPR
spectra of Mn12-BrAc enables us to locate the S=9 manifold at about 40 K above
the Ms= +/-10 ground state of this nominally S=10 system. This is very close to
the Ms = +/-6 state of the S = 10 manifold, thus suggesting pathways for the
thermally assisted magnetization dynamics and related properties. Finally, the
EPR fine structures recently attributed to disorder associated with the acetic
acid of crystallization in Mn12-Ac are absent in the present measurements, thus
suggesting that the Mn12-BrAc complex represents a more suitable candidate for
measurements of quantum effects in high symmetry S=10 SMMs.

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The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
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The categories of this paper are: funct-an
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat