Co-operative Two-Channel Kondo Effect
强关联电子
2018-10-23 v3
摘要
We discuss how the properties of a single-channel Kondo lattice model are modified by additional screening channels. Contrary to current wisdom, additional screening channels appear to constitute a relevant perturbation which destabilizes the Fermi liquid. When a heavy Fermi surface develops, it generates zero modes for Kondo singlets to fluctuate between screening channels of different symmetry, producing a divergent composite pair susceptibility. Additional screening channels couple to these divergent fluctuations, promoting an instability into a state with long-range composite order.
引用
@article{arxiv.cond-mat/9707002,
title = {Co-operative Two-Channel Kondo Effect},
author = {N. Andrei and P. Coleman and H. Y. Kee and A. M. Tsvelik},
journal= {arXiv preprint arXiv:cond-mat/9707002},
year = {2018}
}
备注
Four pages. Latex with four epsf figures Revised version, emphasizing effect of channel non-conservation