Field-induced valence interconversion in metallic Ce

Abstract

Field-induced α –γ phase transition in metallic Ce is studied in the framework of the Anderson impurity Hamiltonian with the account of the Falicov–Kimball interaction. No fitting parameters are used. Both zero and finite temperature cases are considered and yield a number of important characteristics: B–T phase diagram, where B is magnetic field and T is temperature, the critical magnetic field value of the transition at zero temperature ( B C = 160 T ), magnetization versus magnetic field and temperature dependencies in the vicinity of the transition, value of the magnetization jump at different temperatures, etc. The obtained magnetization jump is enough to be detected by a modern megagauss explosion technique.