Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gap-like feature in the normal state of $\bf{X(Fe_{1-x}Co_x)_2As_2}$,
  $\bf{X=Ba,Sr}$ and $\bf{Fe_{1+y}Te}$ revealed by Point Contact Spectroscopy   Point contact spectroscopy reveals a gap-like feature above the magnetic and
structural transition temperatures for underdoped $Ba(Fe_{1-x}Co_x)_2As_2$,
$SrFe_2As_2$ and $Fe_{1+y}Te$. The conductance spectrum starts showing an
enhancement at temperatures as high as 177 K for $BaFe_2As_2$ ($T_N$ $\sim$ 132
K) and 250 K for $SrFe_2As_2$ ($T_N$ $\sim$ 192 K). Possible origins for this
enhancement are discussed in light of recent experimental claims of nematicity
in these materials. We construct a modified phase diagram for Co-doped Ba122
showing a gap-like feature existing above $T_N$ and $T_S$ for the underdoped
regime.

30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci