Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamic parameters of atomically thin superconductors derived from
  the upper critical field   The amplitude of ground state superconducting energy gap $\Delta(0)$ and
relative jump in electronic specific heat at the transition temperature,
$\Delta$$C$${/}$$C$, are primary fundamental parameters of any superconductor.
There are several well-established techniques to measure these values for bulk
samples. However, there is limited number of techniques which can be applied to
measure these parameters in atomically thin superconductors. Here we proposed a
new approach to extract $\Delta(0)$ and $\Delta$$C$${/}$$C$ in atomically thin
superconductors by utilizing perpendicular, Bc2,perp(T) (when magnetic field is
applied in perpendicular direction to the film surface), and parallel,
Bc2,||(T) (when magnetic field is applied in parallel direction to the film
surface), upper critical field data. Deduced parameters for few layers thick
Al, Sn, NbSe2, MoS2, magic angle twisted trilayer graphene (MATTG), and WTe2
are well matched values expected for strong- and moderately strong-coupled
electron-phonon mediated superconductors. Observed, in many atomically thin
superconductors, an enhancement of Bc2,||(0) above the
Pauli-Clogston-Chandrasekhar limiting field (i.e., magnetic field required to
break the Cooper pair) is explained based on the sample geometry, without an
assumption that some exotic pairing mechanism, for instance, Ising-type, is
emergent in these materials.

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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
3
The categories of this paper are: physics
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The categories of this paper are: stat
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
1
The categories of this paper are: cs