Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of superconductivity in BiS2-based superocnductor
  LaO0.5F0.5Bi(S1-xSex)2   We have systematically investigated the crystal structure, magnetic
susceptibility, and electrical resistivity of the BiS2-based superconductor
LaO0.5F0.5Bi(S1-xSex)2 (x = 0 - 0.7). With expanding lattice volume by Se
substitution, bulk superconductivity was induced for x > 0.2, and the highest
Tc of 3.8 K was observed in x = 0.5 (LaO0.5F0.5BiSSe). Metallic conductivity
was observed for x > 0.3 in the resistivity measurement, whereas
semiconducting-like behavior was observed for x < 0.2. The induction of bulk
superconductivity by the partial substitution of S by Se in the LaO0.5F0.5BiS2
superconductor should be positively linked to the enhancement of metallic
conductivity.

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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph