Erratum: Mott Transition in the Mass Imbalanced Ionic Hubbard Model at Half Filling

Erratum: Mott Transition in the Mass Imbalanced Ionic Hubbard Model at Half Filling[Nguyen Thi Hai Yen, Le Duc Anh, Hoang Anh Tuan, Nguyen Toan Thang and Tran Thi Thu Trang, Communications in Physics, Vol. 29, No. 3SI (2019), pp. 305-312]This paper was published on 22 October 2019 with an omission in the text of the author’s list. The author list should read asNGUYEN THI HAI YEN\(^1\), LE DUC ANH\(^2\), HOANG ANH TUAN\(^{1,3,\dagger}\), NGUYEN TOAN THANG\(^1\), TRAN THI THU TRANG\(^4\) AND NGUYEN THI HUONG\(^5\)\(^1\)Institute of Physics, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam \(^2\)Hanoi National University of Education, Hanoi, Vietnam \(^3\)Graduate University of Science and Technology, VAST, Hanoi, Vietnam \(^4\)Ha Long University, Quang Ninh, Vietnam \(^5\)Thuy Loi University, Hanoi, Vietnam\(^{\dagger}\)E-mail: [email protected] author’s list has been corrected as of 29 November 2019. The author’s list has been corrected in the electronic version of the journal.

Mott Transition in the Mass Imbalanced Ionic Hubbard Model at Half Filling

The Mott - Hubbard metal - insulator transition in the half-filled mass imbalanced ionic Hubbard model is investigated using the two-site dynamical mean field theory. We find that for a fixed mass imbalanced parameter r the critical interaction Uc increases when the ionic energy \(\Delta\) is increased. In the other hand, for a fixed \(\Delta\), \(U_c\) decreases with increasing the mass imbalance. We also show the existence of BI phase in the system for the case \(\Delta \ne 0\), \(U=0\) and calculate the staggered charge density \(n_B − n_A\) as a function of the interaction for different values of the mass imbalance. Our results in the limiting cases (\(r = 1\); \(\Delta \ne 0\) or/and \(\Delta = 0\); \(r\ne 1\)) are in good agreement with those obtained from full dynamical mean field theory.