Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting and normal state properties of high entropy alloy
  Nb-Re-Hf-Zr-Tiinvestigated by muon spin relaxation and rotation   Superconducting high entropy alloy (HEA) are emerging as a new class of
superconducting materials. It provides a unique opportunity to understand the
complex interplay of disorder and superconductivity. We report the synthesis
and detail bulk and microscopic characterization of
Nb$_{60}$Re$_{10}$Zr$_{10}$Hf$_{10}$Ti$_{10}$ HEA alloy using transport,
magnetization, specific heat, and muon spin rotation/relaxation ($\mu$SR)
measurements. Bulk superconductivity with transition temperature $T_{C}$ = 5.7
K confirmed by magnetization, resistivity, and heat capacity measurements.
Zero-field $\mu$SR measurement shows that the superconducting state preserves
time-reversal symmetry, and transverse-field measurements of the superfluid
density are well described by an isotropic s-wave model.

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The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: chem-ph
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The categories of this paper are: math
0
The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph