Nuclear Magnetic Relaxation Rate in the Vortex State of a Chiral p-Wave Superconductor

TL;DR

This paper theoretically investigates the site-specific nuclear spin-lattice relaxation rate in the vortex core of a chiral p-wave superconductor, revealing how it varies with the chirality relative to the magnetic field direction.

Contribution

It introduces a theoretical analysis of the relaxation rate dependence on chirality in vortex states of chiral p-wave superconductors, highlighting differences between two chiral states.

Findings

T1^{-1} depends on the chirality and magnetic field orientation.

Numerical results show distinct T1^{-1} behavior for k_x + i k_y and k_x - i k_y states.

Chirality influences the local relaxation rate in vortex cores.

Abstract

The site-selective nuclear spin-lattice relaxation rate T1^{-1} is theoretically studied inside a vortex core in a chiral p-wave superconductor within the framework of the quasiclassical theory of superconductivity. It is found that T1^{-1} at the vortex center depends on the sense of the chirality relative to the sense of the magnetic field. Our numerical result shows a characteristic difference in T1^{-1} between the two chiral states, k_x + i k_y and k_x - i k_y under the magnetic field.