Role of Effective Mass in Interpreting the Knight Shift in Cadmium upon Melting

Abstract

The abrupt changes of Knight shift $K_s$ and nuclear spin relaxation time $T_1$ in Cd upon melting have been examined by studying the spin susceptibility ${\chi }_s$ and spin density $S$ at the melting point. It is found that the density-of-states effective mass $\frac{m^{*}}{m}$ in Cd changes by 27% upon melting while the spin density changes by only 8%. Both of these changes combined satisfactorily explain the abrupt changes of $K_s$ and $T_1$ upon melting.