SIMPLE DESCRIPTION OF THE ANISOTROPIC 2-CHANNEL KONDO PROBLEM

Citation
P. Coleman et Aj. Schofield, SIMPLE DESCRIPTION OF THE ANISOTROPIC 2-CHANNEL KONDO PROBLEM, Physical review letters, 75(11), 1995, pp. 2184-2187
Citations number
21
Categorie Soggetti
Physics
Journal title
ISSN journal
00319007
Volume
75
Issue
11
Year of publication
1995
Pages
2184 - 2187
Database
ISI
SICI code
0031-9007(1995)75:11<2184:SDOTA2>2.0.ZU;2-8
Abstract
We adapt the strong-coupling method first used in the one-channel Kond o model to develop a simple description of the spin-1/2 two-channel Ko ndo model with channel anisotropy. Our method exploits spin-charge dec oupling to develop a compactified Hamiltonian that describes the spin excitations. The structure of the fixed-point Hamiltonian and quasipar ticle impurity S matrix are incompatible with a Fermi-liquid descripti on.