Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electronic Structure of Superconducting FeSe Studied by High-Resolution
  Photoemission Spectroscopy   We have performed soft x-ray and ultrahigh-resolution laser-excited
photoemission measurements on tetragonal FeSe, which was recently identified as
a superconductor. Energy dependent study of valence band is compared to band
structure calculations and yields a reasonable assignment of partial densities
of states. However, the sharp peak near the Fermi level slightly deviates from
the calculated energy position, giving rise to the necessity of self-energy
correction. We have also performed ultrahigh-resolution laser photoemission
experiment on FeSe and observed the suppression of intensity around the Fermi
level upon cooling.

28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph