Spin Liquid Behavior in Electronic Griffiths Phases
arXiv:cond-mat/0412100 · doi:10.1103/PhysRevLett.95.167204
Abstract
We examine the interplay of the Kondo effect and the RKKY interactions in electronic Griffiths phases using extended dynamical mean-field theory methods. We find that sub-Ohmic dissipation is generated for sufficiently strong disorder, leading to suppression of Kondo screening on a finite fraction of spins, and giving rise to universal spin-liquid behavior.
4 pages, minor changes included, typos corrected