Investigation of topological features of Sr₂RuO₄using the dissipationless momentum transport

Department of Physics, Ayatollah Boroujerdi University - Boroujerd, Lorestan 65151-36111, Iran

Received: 2 February 2020
Accepted: 28 May 2020

Abstract

We consider the dynamical and topological properties of chiral superconductor Sr₂RuO₄ using the Hall viscosity for the various pairing channels, including the isotropic and anisotropic order parameters , the chiral state, and the nonchiral state. We show that the topological response to the viscoelastic field depends on the kind of the pairing, the spectral flow properties of the pairing, and the lattice effects, especially for anisotropic order parameters, i.e., the pairing between the next-nearest-neighbor sites and the 3rd-neighbor sites that leads to different residual static Hall viscosity and correlation length. We find that the gap functions and have the same dynamical properties.