Spin Liquid Behavior in Electronic Griffiths Phases

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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

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Strongly Correlated Electrons, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/100375

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0412100
 http://arxiv.org/abs/cond-mat/0412100
 Phys. Rev. Lett. 95, 167204 (2005)
 doi:10.1103/PhysRevLett.95.167204

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arXiv