Effect of uniaxially anisotropic Fermi surface on the quasiparticle scattering inside a vortex core in unconventional superconductors

Abstract

We theoretically study the dependence of the quasiparticle (QP) scattering rate $\Gamma$ on the uniaxial anisotropy of a Fermi surface with changing the magnetic field angle ${\alpha }_{\mathrm{M}}$. We consider the QP scattering due to the non-magnetic impurities inside a single vortex core. The field-angle dependence of the quasiparticle scattering rate $\Gamma ({\alpha }_{\mathrm{M}})$ is sensitive to the sign-change of the pair potential. We show that with increasing the two dimensionality of the system, $\Gamma ({\alpha }_{\mathrm{M}})$ reflects more clearly whether there is the sign-change in the pair potential.

arXiv comment5 pages, 7 figures; Proc. of ISS2011

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Cited by in corpus (2)

• Field-angle Resolved Flux-flow Resistivity as a Phase-sensitive Probe of Unconventional Cooper Pairing
• Effect of anisotropic Fermi surface on the flux-flow resistivity under rotating magnetic field