Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The effect of Sn intercalation on the superconducting properties of
  2H-NbSe2   2H-NbSe2 is known to be an archetype layered transitional metal
dichalcogenide superconductor with a superconducting transition temperature of
7.3 K.In this article, we investigate the influence of Sn intercalation on
superconducting properties of 2H-NbSe2. Sn being nonmagnetic and having no
outer shell d-electrons unlike transition metals, one naively would presume
that its effect on superconducting properties will be very marginal. However,
our magnetic and transport studies reveal a significant reduction of both
superconducting transition temperature and upper critical field [Tc and BC2
(0)] upon Sn intercalation. With a mere 4 mole% Sn intercalation, it is
observed that Tc and BC2 (0) get suppressed by ~ 3.5 K and 3 T, respectively.
Werthamer-Helfand-Hohenberg (WHH) analysis of magneto-transport data is
performed to estimate BC2 (0). From the low temperature Raman scattering data
in the normal phase of intercalated NbSe2, it is inferred that the suppression
of superconductivity cannot be ascribed to strengthening of charge density wave
(CDW)ordering. The effects such as electron-doping induced Fermi surface change
and/or disorder scattering upon intercalation are speculated to be at play for
the observed phenomena.

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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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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: atom-ph
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The categories of this paper are: bayes-an