Physics – Condensed Matter
Scientific paper
1995-06-21
Physics
Condensed Matter
4 pages (ReVTeX Ver. 3.0), 6 figures (available on request)
Scientific paper
10.1103/PhysRevLett.76.271
Particle-hole symmetry breaking perturbation in two-channel pseudospin Kondo problem is studied by the numerical renormalization-group method. It is shown that the repulsion between conduction electrons at the impurity site and the single particle potential are the relevant perturbations against the conventional non-Fermi liquid fixed point. Although the repulsion (potential) with realistic strength prevents the overscreening of pseudospin, it induces in turn a {\it real spin}, which is also overscreened again. Thus the {\it real spin} susceptibility becomes anomalous contrary to the conventional two-channel Kondo problem.
Kusunose Hiroaki
Miyake Katsuya
Sakai Osamu
Shimizu Yasuaki
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