Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unconventional Low-Energy Excitations of Cuprate Superconductors   Recent development in the physics of high-temperature cuprate
superconductivity is reviewed, with special emphasis on the phenomena of
unconventional and non-universal low-energy excitations of hole- and
electron-type cuprate superconductors and the possible physical origin. A
phenomenology based on coexisting competing orders with cuprate
superconductivity in the ground state appears to provide consistent account for
a wide range of experimental findings, including the presence (absence) of
pseudogaps and Fermi arcs above the superconducting transition $T_c$ in
hole-type (electron-type) cuprate superconductors and the novel conductance
modulations below $T_c$, particularly in the vortex state. Moreover, the
competing order scenario is compatible with the possibility of pre-formed
Cooper pairs and significant phase fluctuations in cuprate superconductors. The
physical implications of the unified phenomenology and remaining open issues
for the microscopic mechanism of cuprate superconductivity are discussed.

12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg