Nuclear magnetic relaxation rate in the vortex state of a chiral p-wave superconductor

The site-selective nuclear spin-lattice relaxation rate T-1(-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 T-1(-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 T-1(-1) between the two chiral states, (k) over bar (x) + i (k) over bar (y) and (k) over bar (x) - i (k) over bar (y) under the magnetic field. (C) 2003 Elsevier Science B.V. All rights reserved.