Domain walls in a tetragonal chiral p -wave superconductor

Domain walls in a tetragonal chiral p -wave superconductors with broken time-reversal symmetry are analyzed in the framework of the Ginzburg-Landau theory. The energy and the jump of the magnetic induction on the wall were determined for different types of walls as functions of the parameters of the Ginzburg-Landau theory and orientation of the domain wall with respect to the crystallographic axes. We discuss possible implications of the analysis for Sr2 RuO4 where no stray magnetic fields from domain walls were detected experimentally.