Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fate of $yz$/$zx$ orbital degeneracy and $xy$ Fermi surface in Ru
  substituted FeSe$_{1-x}$Te$_{x}$   We have investigated the impact of Ru substitution on the multi-band
electronic structure of FeSe$_{1-x}$Te$_x$ by means of angle-resolved
photoemission spectroscopy (ARPES). The ARPES results exhibit suppression of
the $xy$ Fermi surface and the spectral broadening near the zone boundaries,
which can be associated with the lattice disorder introduced by the Ru
substitution. The degeneracy of the Fe 3$d$ $yz$/$zx$ bands at the zone center,
which is broken in FeSe$_{1-x}$Te$_x$, is partly recovered with the Ru
substitution, indicating coexistence of nematic and non-nematic electronic
states.

14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio