Research Article
Induced Representation Method in the Theory of Electron Structure and Superconductivity
Table 4
Spatial parts of pairs in point
, space group
P4
/nmm.
| ā | Small IRs [26] | Possible pair symmetry |
| Singlet pairs | , | | , | |
| Triplet pairs | , | | , | |
|
|
( ) Note that and central extension of coincide. IRs of are projective and are denoted according to [ 26]. |