A van Hemmen-Kondo model for disordered strongly correlated electron systems

Abstract

We present here a theoretical model in order to describe the competition between the Kondo effect and the spin glass behavior. The spin glass part of the starting Hamiltonian contains Ising spins with an intersite exchange interaction given by the local van Hemmen model, while the Kondo effect is described as usual by the intrasite exchange $J_K$. We obtain, for large $J_K$ values, a Kondo phase and, for smaller $J_K$ values, a succession, with decreasing

14 pages, 4 figures, accepted for publication in Phys. Rev. B

References in corpus (5)

• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
• Kondo-Cluster-Glass State near a Ferromagnetic Quantum Phase Transition
• Spin Glass and ferromagnetism in disordered Cerium compounds
• Quantum Griffiths phase in CePd(1-x)Rh(x) with x ~ 0.8
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Cited by in corpus (4)

• Kondo-Anderson Transitions
• Competition between Kondo and RKKY correlations in the presence of strong randomness
• Fermionic van Hemmen Spin Glass Model with a Transverse Field
• Spin-1 Hopfield model under a random field