Transverse nuclear magnetic relaxation rate of the cuprate superconductors

Abstract

We simplify the Pennington-Slichter expression for the transverse NMR relaxation rate (${\mathit{T}}_{2\mathit{G}}^{\mathrm{-}1}$) in the cuprate superconductors, and use our result to calculate spin-fluctuation parameters in the normal state and ${\mathit{T}}_{2\mathit{G}}$ for the superconducting state of ${\mathrm{YBa}}_2$ ${\mathrm{Cu}}_3$ ${\mathrm{O}}_7$.