Deconstruction of the Kondo Effect near the AFM-Quantum Critical Point
Strongly Correlated Electrons
2007-05-23 v2
Abstract
The problem of a spin-1/2 magnetic impurity near an antiferromagnetic transition of the host lattice is solved. The problem is shown to transform to a multichannel problem. A variety of fixed points is discovered asymptotically near the AFM-critical point. Among these is a new variety of stable fixed point of a multichannel Kondo problem which does not require channel isotropy. At this point Kondo screening disappears but coupling to spin-fluctuations remains. Besides its intrinsic interest, the problem is an essential ingredient in the problem of quantum critical points in heavy-fermions.
Keywords
Cite
@article{arxiv.cond-mat/0501337,
title = {Deconstruction of the Kondo Effect near the AFM-Quantum Critical Point},
author = {H. Maebashi and K. Miyake and C. M. Varma},
journal= {arXiv preprint arXiv:cond-mat/0501337},
year = {2007}
}
Comments
5 pages,3 figures