Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting dome in ferroelectric-type materials from soft mode
  instability   We present a minimal theory of superconductivity enhancement in
ferroelectric-type materials. Simple expressions for the optical mode
responsible for the soft mode transition are assumed. A key role is played by
the anharmonic phonon damping which is modulated by an external control
parameter (electron doping or mechanical strain) causing the appearance of the
soft mode. It is shown that the enhancement in the superconducting critical
temperature $T_{c}$ upon approaching the ferroelectric transition from either
side is due to the Stokes electron-phonon scattering processes promoted by
strong phonon damping effects.

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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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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: hep-ex