Excitation Spectra of the Two Impurity Anderson Model.II. : Interplay between the Kondo Effect and the Inter Site Interactions

概要

論文の詳細を見る
Excitation spectra of the txvo impurity Anderson model are calculated for variousparameter regions of tlte f-f transfer, t, c-f lvybriclization and tlae exchange coujclingbetween local spins. The parity dependent potential scattering suppresses tlae criticaltrauasition pointed out by Jones et at. In tlae case ccf S111811 t, tl?e parity splitting of thef-level is given by t/ Z, w'here Z is the enhau?cen?ent factor of the sjcecific laeat iut thesingle impurity problem. In the case of large t, )' of the electronic specific lteatdecreases drastically a?ad the parity splittixag increases largely. Tlte splitting remairas tobe order of //Z if tlae induced kitaetic exchauagct coupling is compensated by othermechanism. The fluctuation of the singlet non-uniform superconductivity is relativelylarge in the electron-hole asymmetric case, but its intensity is about 1 / 10 of the an-tiferromagnetic one.[two impurity Anderson model, two impurity 1<ondo problem, numerical renor- l] malization group, heavy fermionl
社団法人日本物理学会の論文
1992-07-15