Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NMR Evidences for the coupling between conduction electrons and
  molecular degrees of freedom in the exotic member of the Bechgaard salt,
  (TMTSF)2FSO3   We performed Se and F-NMR measurements on single crystals of (TMTSF)2FSO3 to
characterize the electronic structures of different phases in the
Temperature-Pressure phase diagram, determined by precise transport
measurements [Jo et al., Phys. Rev. B67, 014516 (2003)]. We claim that such
varieties of electronic states in the refined phase diagram are caused by
strong couplings of the conduction electrons with FSO3 anions, especially with
the permanent electric dipoles on the anions. We suggest that as temperature
decreases, the FSO3 anions form orientational ordering through two steps; first
only the tetrahedrons form an orientational order leaving the orientations of
the electronic dipoles in random (transition I); then the dipoles form a
perfect orientational order at a lower temperature (transition II). In the
intermediate temperature range between transitions I and II, we found an
appreciable enhancement of homogeneous and inhomogeneous widths of 77Se-NMR
spectrum. From the analysis of the angular dependence of the linewidth, we
attributed these anomalies to the intramolecular charge disproportionation or
imbalance and its slow dynamics caused by the coupling with the permanent
electric dipole of anion. Results of 19F-NMR relaxation and lineshape
measurements support this picture very well. Electronic structures at higher
pressures up to 1.25 GPa are discussed on the basis of the results of the 77Se
and 19F-NMR measurements.

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The categories of this paper are: q-bio
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The categories of this paper are: cs
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-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: ao-sci
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin