Spin-liquid behavior in electronic griffiths phases.
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 the suppression of Kondo screening on a finite fraction of spins, and giving rise to universal spin-liquid behavior.
Tanasković
D
D
Department of Physics, Florida State University, Tallahassee, 32306, USA.
Dobrosavljević
V
V
Miranda
E
E