Program

P.22 -- Poster, NCTP-40

Date: Monday, 27 July 2015

Time: 14h00 - 15h30

Transport properties of the Hubbard model on a honeycomb lattice

N. T. H. Yến(1), H. A. Tuấn()1, N. T. Hương(2), L. Đ. Ánh(2)

(1) Institute of Physics; (2) Ha Noi University of Education

We study a two-component Dirac fermion mixtures loaded into an optical lattice. The system is modeled by the Hubbard model on a honeycomb lattice. The local lattice Green function of the model is obtained within the coherent potential approximation. The critical value for the Mott transition at zero temperature is evaluated. The transport properties such as the electronic resistivity, the thermal conductivity, and the thermal power are calculated at finite temperature. The results reveal the key feature of Dirac fermion on a honeycomb lattice, which differs from that of casual fermion.

Presenter: Nguyen Thi Hai Yen