Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New anti-perovskite-type Superconductor ZnNyNi3   We have synthesized a new superconductor ZnNyNi3 with Tc ~3 K. The crystal
structure has the same anti-perovskite-type such as MgCNi3 and CdCNi3. As far
as we know, this is the third superconducting material in Ni-based
anti-perovskite series. For this material, superconducting parameters,
lower-critical field Hc1(0), upper-critical field Hc2(0), coherence length
x(0), penetration depth l(0), and Gintzburg -Landau parameter k(0) have been
experimentally determined.

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The categories of this paper are: q-bio
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The categories of this paper are: eess
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
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The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci