We theoretically investigate the applied magnetic field-angle dependence of the flux-flow resistivity ρf(αM) for an uniaxially anisotropic Fermi surface. ρf is related to the quasiparticle scattering rate Γ inside a vortex core, which reflects the sign change in the superconducting pair potential. We find that ρf(αM) is sensitive to the sign-change in the pair potential and has its maximum when the magnetic field is parallel to the gap-node direction. We propose the measurement of the field-angle dependent oscillation of ρf(αM) as a phase-sensitive field-angle resolved experiment.
@article{arxiv.1304.6509,
title = {Field-angle Resolved Flux-flow Resistivity as a Phase-sensitive Probe of Unconventional Cooper Pairing},
author = {Yoichi Higashi and Yuki Nagai and Masahiko Machida and Nobuhiko Hayashi},
journal= {arXiv preprint arXiv:1304.6509},
year = {2014}
}