Anomalous magnetic properties near Mott transition in Kagome lattice Hubbard model

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:310

Article; Proceedings Paper

Ohashi, T. ; Suga, S.-i. ; Kawakami, N. ; Tsunetsugu, H.

关键词: Kagome lattice;    metal-insulator transition;    cellular dynamical mean field theory;    specific heat;   

DOI  :  10.1016/j.jmmm.2006.10.1143

来源: Elsevier

【 摘 要 】

We investigate the characteristics of the metallic phase near the Mott transition in the Kagome 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. (c) 2006 Elsevier B.V. All rights reserved.

【 授权许可】

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