Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A perspective of superconductivity as multiband phenomena: Cuprate, iron
  and aromatic systems   A theoretical overview of the classes of superconductors encompassing (a)
high-Tc cuprate, (b) iron-based and (c) aromatic superconductors is given.
Emphasis is put on the multiband natures of all the three classes, where the
differences in the multiorbits and their manifestations in the electronic
structures and pairing are clarified. From these, future directions and
prospects are discussed.

24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th