Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Current patterns and magnetic impurities in time-reversal breaking
  superconductor   We study the impurity effect in the time reversal symmetry (${\cal T}$)
breaking superconductor based on the Bogoliubov-de Gennes (BdG) equations. In
${\cal T}$-violating superconductors, spontaneous currents are induced around
the impurity. The current patterns around the impurity reflect the structures
of the Cooper pairs. We investigate impurity problem numerically for two kinds
of ${\cal T}$ violating superconductors $(p_{x}\pm {\rm i}p_{y}$ and $d+{\rm
i}s)$ and investigate the currents around the impurity. We also study the
effects of the magnetic impurity in p-wave ($p_{x}\pm {\rm i}p_{y}$)
superconductor, especially in view of the zero-energy crossing of energy levels
related to the phase transition of the ground state.

27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th