Self-consistent solution of the Bogoliubov-de Gennes equation for a single vortex in f-wave superconductors:: Application to Sr2RuO4

The paring sysmmetry of the triplet superconductor Sr2RuO4 is still controversial. Recently, the scanning tunneling microscopy measurement has been done on the quasi-particle structure in Sr2RuO4. They obtained the local density of states around a single vortex. Using the Bogoliubov-de Gennes equation in the differential form of f-wave (Delta +/- (k) = Delta d (k(x) +/- k(y)) cos (ckz)) superconductivity that has the horizontal nodes, we investigate the quasi-particle structure. As compared with the p-wave pairing, the local density of states of f-wave paring at the vortex core is much similar to the experimental data.