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Physical Review B

Phase diagram and quantum critical behavior of an integrable Kondo lattice model

Yupeng Wang, Hua Lin

Published Mar 15, 2004• 0 citations
Publisher

Abstract

An integrable Kondo lattice model describing a strongly correlated electron host interacting with a spin-$\frac{1}{2}$ lattice is proposed. It is found that with the variations of the Kondo coupling J, the hole concentration ${n}_{h},$ and the magnetic field H, the system may fall into a variety of phases. The phase boundaries of the ground state are determined exactly. The marginal excitations and the quantum critical behavior at the phase boundaries are discussed.

DOI
10.1103/physrevb.69.092402

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