Augmented-Plane-Wave Calculation of Indirect-Exchange Matrix Elements for Gadolinium.

摘要

The exchange matrix elements between a local 4f moment and the conduction electrons (Ruderman-Kittel-Kasuya-Yosida exchange) have been calculated for paramagnetic gadolinium metal using nonrelativistic augmented-plane-wave wavefunctions. The magnitude of the matrix elements is found to be largest for d-like conduction electrons and is quite sensitive to their angular distribution.