Nuclear acoustic resonance in single-crystal gold metal

Abstract

Nuclear acoustic resonance is reported for the first time for $^{197}\mathrm{Au}$ in single-crystal gold metal. The ratio $\frac{{\ensuremath{\omega}}^{(197)}}{H}$ was measured to be $(2\ensuremath{\pi})(74.118\ifmmode\pm\else\textpm\fi{}0.007)$ Hz/G and the line shape of the $\ensuremath{\Delta}m=\ifmmode\pm\else\textpm\fi{}2$ resonance was a Lorentz line shape with a half width at half amplitude of 154.8 \ifmmode\pm\else\textpm\fi{} 1 G at 78 K after high-temperature annealing. $\stackrel{}{\mathrm{S}}$ tensor components which relate dynamic electric field gradients with dynamic elastic strain are determined to be of opposite sign and their magnitudes are ${S}_{11}\ensuremath{-}{S}_{12}=13.6\ifmmode\times\else\texttimes\fi{}{10}^{15}$ statvolts/${\mathrm{cm}}^{2}$ and ${S}_{44}=13.0\ifmmode\times\else\texttimes\fi{}{10}^{15}$ statvolts/${\mathrm{cm}}^{2}$. Lattice contributions to these components are computed and the conduction-electron contributions determined.