49th Vietnam Conference on Theoretical Physics (VCTP-49)
Hội nghị Vật lý lý thuyết Việt Nam lần thứ 49
Huế, 30 July - 2 August, 2024

Programme

P.21 -- Poster, VCTP-49

Date: Wednesday, 31 July 2024

Time: 08:30 - 10:00

Metal-insulator phase diagram in the ionic Hubbard model with Coulomb disorder

Nguyen Thi Hai Yen (1), Hoang Anh Tuan (1) and Le Duc Anh (2)

(1) Institute of Physics, VAST (2) Hanoi National University of Education

We study the metal-insulator transitions in the half-filled ionic Hubbard model with Coulomb disorder by the typical medium theory using the equation of motion method as an impurity solver. In addition to the three phases showed up in the usual ionic Hubbard model, the phase diagram of this model contains a disordered Mott insulator phase, where the geometrical averaged local density of states in the Fermi level equals zero while the arithmetical one is non-zero.

Presenter: Yen Thi Hai Nguyen


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