A Green function approximation solution of the Kondo lattice
作者： A S da Rosa Simoes , J R Iglesias , A Rojo , B R Alascio
DOI: 10.1088/0022-3719/21/10/013
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摘要: A Green function diagrammatic approach is utilised to calculate the density of states a Kondo lattice described by periodic Anderson Hamiltonian. The hybridisation between f and conduction electrons included in atomic term Hamiltonian, which can be solved exactly. hopping terms are considered through an approximate Dyson equation, equivalent generalised Hubbard I scheme. results at T=0 K indicate existence 'Kondo peak' Fermi level. Metallic or insulating phases obtained for different occupations states.
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