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On the basis of Eilenberger theory, surface bound states and spontaneouscurrent are studied in cyclic d-wave superconductors as a broken time-reversalsymmetry of superconductivity in cubic lattice symmetry. We discuss how thespontaneous current and the electronic states depend on the orientation of thesurface relative to the symmetry of superconductivity. The condition fortopological Fermi arcs of zero-energy surface bound states to appear isidentified in the complex pairing function of the cyclic d-wave.

Surface Bound States and Spontaneous Current in Cyclic d-Wave Superconductors