Eigenstates and Phase Transitions of Ising Spin Network Immersed in the Incommensurate Exchange Field

摘要: A simple incommensurate mean field model is introduced to explain complex magnetic phase diagrams of various rare-earth intermetallic compounds such as CeSb and CeBi. The eigenstates their energies the Ising spin chain immersed in exchange with magnitude J , wave vector k δ are determined. S ( r ) assumed point local direction. classified into three groups, irrational states, rational states { } δ=0 δ=π/2 n where state index given by a positive integer. diagram sketched model. It emphasized that present suggests an effect coupling formation conduction band electrons on heavy fermion superconductivity discussed.