Fermi Liquid and Non-Fermi Liquid in M-Channel N Fold Degenerate Anderson Lattice :

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説明

We investigate Fermi liquid in the single-channel U-infinite N fold degenerate Anderson lattice with use of the expansion from the large limit of the spin-orbital degeneracy N. By collecting all diagrams up to O(N^<-2>) of the imaginary part of the self-energy of the conduction electrons, the sum of those is shown to be given by a form proportional to ω^2+π^2T^2 up to O(N^<-2>) in the single-channel model. On the other hand, the imaginary part of the self-energy of O(N^<-1>) in the multichannel model has more singular frequency-/temperature-dependence, so the system is regarded as non-Fermi liquid.

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  • JJAP series

    JJAP series 11 168-170, 1999-02-08

    Japanese Journal of Applied Physics

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