Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Specific heat and $\mu$SR study on the noncentrosymmetric superconductor
  LaRhSi3   We have investigated the superconducting properties of the noncentrosymmetric
superconductor LaRhSi$_{3}$ by performing magnetization, specific heat,
electrical resistivity and muon spin relaxation ($\mu$SR) measurements.
LaRhSi$_{3}$ crystallizes with the BaNiSn$_{3}$-type tetragonal structure
(space group \textit{I4 mm}) as confirmed through our neutron diffraction
study. Magnetic susceptibility, electrical resistivity and specific heat data
reveal a sharp and well defined superconducting transition at $T_{c}$ = 2.16
$\pm$ 0.08 K. The low temperature specific heat data reveal that LaRhSi$_{3}$
is a weakly coupled bulk BCS superconductor and has an s-wave singlet ground
state with an isotropic energy gap of $\sim$ 0.3 meV, $2 \Delta_{0}
/k_{B}T_{c}$ = 3.24. The specific heat data measured in applied magnetic field
strongly indicate a type-I behaviour. Type-I superconductivity in this compound
is also inferred from the Ginzburg-Landau parameter, $\kappa$ = 0.25. Various
superconducting parameters, including the electron-phonon coupling strength,
penetration depth and coherence length, characterize LaRhSi$_{3}$ as a moderate
dirty-limit superconductor. A detailed study of the magnetic field-temperature
($H-T$) phase diagram is presented and from a consideration of the free energy,
the thermodynamic critical field, $H_{c0}$ is estimated to be 17.1 $\pm$ 0.1
mT, which is in very good agreement with that estimated from the transverse
field $\mu$SR measurement that gives $H_{c0}$ = 17.2 $\pm$ 0.1 mT. The
transverse field $\mu$SR results are consistent with conventional type-I
superconductivity in this compound. Further, the zero-field $\mu$SR results
indicate that time reversal symmetry is preserved when entering the
superconducting state, also supporting a singlet pairing superconducting ground
state in LaRhSi$_{3}$.

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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
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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: ao-sci
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The categories of this paper are: supr-con
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: eess