Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single crystal growth and superconducting properties of LiFeAs   We report the successful growth of high quality single crystals of LiFeAs
with lateral sizes up to 5 x 5 mm2 by the Sn-flux method. Electrical
resistivity studies reveal that the superconducting onset temperature is 18.2 K
with a transition width less than 1.1 K and the ratio of room temperature to
residual resistivity is about 24. Bulk superconductivity is supported by
perfect shielding in the magnetic susceptibility and a clear jump in the
specific heat Cp, resulting in deltaCp/T ~ 20.0 mJ/mol*K2. Upper critical field
slopes of dHc2c/dT ~ -1.39 and dHc2ab/dT ~ -2.99 T/K near Tc predict zero
temperature upper critical fields of Hc2c(0) ~ 17.2 and Hc2ab(0) ~ 36.9 T and
coherence lengths of Xi_ab = 4.4 and Xi_c = 2.0 nm in a single band model. This
result points to a modest superconducting anisotropy about 2.3 in LiFeAs.

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The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: eess