Programme

P.44 -- Poster, VCTP-48

Date: Thursday, 3 August 2023

Time: 08:30 - 10:00

Double and triple occupancies in large mass imbalance mixtures

Thanh-Mai Thi Tran (1), Hong-Son Nguyen (2) and Minh-Tien Tran (1)

(1) Institute of Physics, Vietnam Academy of Science and Technology, Hanoi 10072, Vietnam; (2) Department of Occupational Safety and Health, Trade Union University, 169 Tay Son, Hanoi, Vietnam

Optical lattices of dual-species atomic mixtures with large mass imbalance are modelled by an extended three-component Falicov-Kimball model. The dual-species mixtures consist of single-component light and double-component heavy atoms. Due to the large mass imbalance, only the light atoms are moveable across the optical lattice, whereas the heavy atoms are localized at the lattice sites. Both two- and three-body interactions between the atom components are included. The dynamics of light atoms, as well as the double and triple occupancies are determined within the dynamical mean field theory. It is found that the insulating phases can be classified by the double occupancies between the atom components, and they can occur only at certain fillings and strong interaction range. The triple occupancy is finite only in the metallic phase.

Presenter: Nguyễn Hồng Sơn