Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-orbit coupling enhanced superconductivity in Bi-rich compounds
  ABi$_{3}$ (A=Sr and Ba)   Recently, Bi-based compounds have attracted attentions because of the strong
spin-orbit coupling (SOC). In this work, we figured out the role of SOC in
ABi$_{3}$ (A=Sr and Ba) by theoretical investigation of the band structures,
phonon properties, and electron-phonon coupling. Without SOC, strong Fermi
surface nesting leads to phonon instabilities in ABi$_{3}$. SOC suppresses the
nesting and stabilizes the structure. Moreover, without SOC the calculation
largely underestimates the superconducting transition temperatures ($T_{c}$),
while with SOC the calculated $T_{c}$ are very close to those determined by
measurements on single crystal samples. The SOC enhanced superconductivity in
ABi$_{3}$ is due to not only the SOC induced phonon softening, but also the SOC
related increase of electron-phonon coupling matrix elements. ABi$_{3}$ can be
potential platforms to construct heterostructure of superconductor/topological
insulator to realize topological superconductivity.

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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom