Extended Dynamical Mean Field Theory Study of the Periodic Anderson Model

Details Extended Dynamical Mean Field Theory Study of the Periodic Anderson Model Extended Dynamical Mean Field Theory Study of the Periodic Anderson Model

2003-03-26

arxiv.org/abs/cond-mat/0303539v2

Phys. Rev. Lett. 91, 037209 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.91.037209

We investigate the competition of the Kondo and the RKKY interactions in heavy fermion systems. We solve a periodic Anderson model using Extended Dynamical Mean Field Theory (EDMFT) with QMC. We monitor simultaneously the evolution of the electronic and magnetic properties. As the RKKY coupling increases the heavy fermion quasiparticle unbinds and a local moment forms. At a critical RKKY coupling there is an onset of magnetic order. Within EDMFT the two transitions occur at different points and the disapparence of the magnetism is not described by a local quantum critical point.

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