9 citations · 20 across the 15 of their papers we have counts for
4 papers · 1 filter
Identifying Band Inversions in Topological Materials Using Diffusion Monte Carlo
Annette Lopez, Cody A. Melton, Jeonghwan Ahn +2
Topological insulators are characterized by insulating bulk states and robust metallic surface states. Band inversion is a hallmark of topological insulators: at time-reversal inva…
Stacking Polymorphism of PtSe: Its Implication to Layer-dependent Metal-insulator Transitions
Jeonghwan Ahn, Iuegyun Hong, Gwangyoung Lee +4
Using diffusion Monte Carlo (DMC) and density functional theory (DFT) calculations, we examined the structural stability and interlayer binding properties of PtSe, a representa…
Toward improved property prediction of 2D materials using many-body quantum Monte Carlo methods
Daniel Wines, Jeonghwan Ahn, Anouar Benali +10
The field of two-dimensional (2D) materials has grown dramatically in the last two decades. 2D materials can be utilized for a variety of next-generation optoelectronic, spintronic…
Exploring interlayer coupling in the twisted bilayer PtTe
Jeonghwan Ahn, Seoung-Hun Kang, Mina Yoon +1
We have investigated interlayer interactions in the bilayer PtTe system, which influence the electronic energy bands near the Fermi levels. Our diffusion Monte Carlo (DMC) ca…