Anomalous magnetic properties near Mott transition in Kagomé lattice Hubbard model

Details Anomalous magnetic properties near Mott transition in Kagomé lattice Hubbard model Anomalous magnetic properties near Mott transition in Kagomé lattice Hubbard model

2006-08-30

arxiv.org/abs/cond-mat/0608657v2

J. Mag. Mag. Mater., 310, 879 (2007).

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 3 figures, accepted for publication in J. Mag. Mag. Mater. (Proceedings of the ICM, Kyoto, Japan, August 2006)

Scientific paper

10.1016/j.jmmm.2006.10.1143

We investigate the characteristics of the metallic phase near the Mott transition in the Kagom\'e lattice Hubbard model using the cellular dynamical mean field theory. By calculating the specific heat and spin correlation functions, we demonstrate that the quasiparticles show anomalous properties in the metallic phase close to the Mott transition. We find clear evidence for the multi-band heavy quasiparticles in the specific heat, which gives rise to unusual temperature dependence of the spin correlation functions.

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