Indirect nuclear spin interactions and nuclear ordering in metals

Abstract

All conduction electron-mediated nuclear spin interactions that arise from the electron-nuclear hyperfine Hamiltonian are calculated using Bardeen's spherical approximation for electronic wave functions. The results are applied to nuclear magnetic ordering in copper, where non-s-electron-mediated interactions are found to be important for the understanding of the ordered state properties. The ordered structure of silver nuclei is predicted to be a generalized form of a type I antiferromagnet due to the dominating Ruderman-Kittel interaction.