Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $Ab$ $intito$ study on some new spin-gapless semiconductors: The
  Zr-based quanternary Heusler alloys   Employing $ab$ $intito$ electronic structure calculations, we have
investigated electronic and magnetic properties of the Zr-based quanternary
Heusler alloys: ZrCoVIn, ZrFeVGe, ZrCoFeP, ZrCoCrBe and ZrFeCrZ (Z=In and Ga).
Our $ab$ $intito$ calculation results show that all the alloys are (or nearly)
spin-gapless semiconductors. All the alloys have large band gaps, indicating
the stability of them at room temperature. The Slater-Pauling behaviours of
these alloys are discussed as well. The values of Curie temperature of all the
alloys are estimated. And it is found that the values of the Curie temperature
for all our calculated quanternary Heusler alloys are higher than that of room
temperature.

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The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin