Susceptibility of Conduction Electrons Interacting with Crystal Field States

概要

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In praseodymium metal and its intermetallic compounds crystal fields lead to a singlet ground state for the f-electrons. The s-f exchange interaction brings about inelastic scattering of conduction electrons by exciting the singlet ground state. The dynamic susceptibility for the conduction electrons is calculated by the bubble approximation which takes the successive virtual excitations of the singlet ground states. The result shows that the effective electron-electron interaction appears which is repulsive for low energy excitations and turns attractive for those just above the energy splittings of the crystal field states. The nuclear relaxation and nuclear-nuclear interaction mediated by this susceptibility is also studied.
理論物理学刊行会の論文
1991-02-05