Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of superconductivity in Y$_2$PdGe$_3$, structurally same as
  MgB$_2$   The results of electrical resistance (1.4 - 300 K), magnetization (2-300 K)
and heat-capacity (2 - 50 K) measurements in Y$_2$PdGe$_3$, found to
crystallize in a AlB$_2$-derived hexagonalstructure, are reported. The results
establish that this compound is superconducting below 3 K. This obervation is
interesting considering that this compound is the first superconductor among
the ternary members derived from the hexagonal AlB$_2$ structure. With
superconductivity being uncommon even among binary alloys derived from AlB$_2$
structure and with recent excitement on the observation of high temperature
superconductivity in Mg$B_2$, this finding gains importance.

1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol