Yosida has shown that the long-range zener ferromagnetic term arising from the exchange interaction between conduction electrons and unfilled-inner-shell electrons, does not appear explicitly when the calculation is extended to second-order perturbation.

摘要

Yolanda baa shown that the long-range Zener ferromagnetic tera ariaing froa the exchange interaction between conduction electrons and unfilled-inner-shell electrons does not appear explicitly when the calculation is extended to second-order perturbation. The magnetic interaction term to second-order perturbation, decrease rapidly with distance and is short-range relative to the Zener interaction which extends uniformly throughout the solid.