Mean Field Description of Kondo-Stabilized Spin Liquid in Kondo Lattice with Heavy Fermions
K. A. Kikoin, M. N. Kiselev, A. S. Mishchenko
Abstract
Microscopic mechanism of forming the spin liquid of neutral fermions in Kondo lattices with nearly integer valence of the f-electrons in presented. It is shown that the competition between the Kondo scattering and the indirect exchange interaction can result in stabilization of a state with separated spin and charge excitations with a Fermi-type spectrum for both of them. The origin of strong antiferromagnetic fluctuations is briefly discussed.
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