Effect of Anisotropic Fermi Surface on the Flux-flow Resistivity under Rotating Magnetic Field

We numerically investigate the effect of in-plane anisotropic Fermi surface (FS) on the flux-flow resistivity ρf under rotating magnetic field on the basis of the quasiclassical Green's function method. We demonstrate that one can detect the phase in pairing potential of Cooper pair through the field-angular dependence of ρf even if the FS has in-plane anisotropy. In addition, we point out one can detect the gap-node directions irrespective of the FS anisotropy by measuring ρf under rotating field.