A multi-channel fixed point for a Kondo spin coupled to a junction of Luttinger liquids
arXiv:cond-mat/0510206 · doi:10.1209/epl/i2006-10167-8
Abstract
We study a system of an impurity spin coupled to a junction of several Tomonaga-Luttinger liquids using a renormalization group scheme. For the decoupled S-matrix at the junction, there is a range of Kondo couplings which flow to a multi-channel fixed point for repulsive inter-electron interactions; this is associated with a characteristic temperature dependence of the spin-flip scatterings. If the junction is governed by the Griffiths S-matrix, the Kondo couplings flow to a strong coupling fixed point where all the wires are decoupled.
7 pages including 3 figures; the RG equations have been corrected, and the discussion of the muti-channel fixed point has been suitably modified
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Cited by in corpus (5)
- Renormalization group study of transport through a superconducting junction of multiple one-dimensional quantum wires
- Renormalization group study of the Kondo problem at a junction of several Luttinger wires
- Underscreened Kondo impurities in a Luttinger liquid
- Electron-electron interaction effects on transport through mesoscopic superconducting hybrid junctions
- Effect of strong correlation on the study of renormalization group flow diagram for Kondo effect in a interacting quantum wire