5 papers
Many-body benchmarking of DFT local-registry energetics in bilayer InSe
Jeonghwan Ahn, Abdulgani Annaberdiyev, Jovan Nelson +2
Density functional theory (DFT) is widely used to model twisted bilayers, but the accuracy of the local stacking energetics underlying such models remains uncertain. Here, we bench…
Quantum Monte Carlo Benchmarking of Molecular Adsorption on Graphene-Supported Single Pt Atom
Jeonghwan Ahn, Iuegyun Hong, Gwangyoung Lee +3
The precise understanding of adsorption energetics and molecular geometry at catalytic sites is fundamental for advancing catalysis, particularly under the constraints of resource…
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…
Correlation Effects on Coupled Electronic and Structural Properties of Doped Rare-Earth Trihydrides
Adam Denchfield, Hyeondeok Shin, Panchapakesan Ganesh +2
Rare-earth trihydrides (H) exhibit intriguing coupled electronic and structural properties as a function of doping, hydrogen vacancies, and thermodynamic conditions. Theoret…
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…