Self-consistent Treatment of Crystal-Electric-Field-Levels in the Anderson Lattice

Details Self-consistent Treatment of Crystal-Electric-Field-Levels in the Anderson Lattice Self-consistent Treatment of Crystal-Electric-Field-Levels in the Anderson Lattice

1996-09-17

arxiv.org/abs/cond-mat/9609165v1

Physica B, 230-232, 441 (1997)

Physics

Condensed Matter

3 pages, REVTeX type, proceedings of SCES96 Z\"urich

Scientific paper

10.1016/S0921-4526(96)00605-9

We consider an Anderson lattice model with a spin 1/2 degenerated conduction electron band and localized ionic CEF-levels, classified according to the irreducible representation of the point group of the lattice. We present the self-consistency equations for local approximations ("$d\rightarrow\infty"$ approximation) for the periodic Anderson model. It leads to a matrix formulation of the effective local density of states and the lattice $f$-Green's function. We derive the quasi-particle life-time which enters the Boltzmann transport equations. The impact of a $k$-dependent hybridization is discussed. We prove that vertex corrections will vanish, as long as all states of an irreducible representation couple to the conduction electron band with a hybridization matrix element of the same parity.

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