Field-angle Resolved Flux-flow Resistivity as a Phase-sensitive Probe of Unconventional Cooper Pairing

Abstract

We theoretically investigate the applied magnetic field-angle dependence of the flux-flow resistivity ${\rho }_{\mathrm{f}}({\alpha }_{\mathrm{M}})$ for an uniaxially anisotropic Fermi surface. ${\rho }_{\mathrm{f}}$ is related to the quasiparticle scattering rate $\Gamma$ inside a vortex core, which reflects the sign change in the superconducting pair potential. We find that ${\rho }_{\mathrm{f}}({\alpha }_{\mathrm{M}})$ 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 ${\rho }_{\mathrm{f}}({\alpha }_{\mathrm{M}})$ as a phase-sensitive field-angle resolved experiment.

6 pages, 5 figures

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Cited by in corpus (1)

• Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRh${}_2$As${}_2$