140 citations · 1k across the 66 of their papers we have counts for
9 papers · 1 filter
Kohn-Sham accuracy from orbital-free density functional theory via -machine learning
Shashikant Kumar, Xin Jing, John E. Pask +2
We present a -machine learning model for obtaining Kohn-Sham accuracy from orbital-free density functional theory (DFT) calculations. In particular, we employ a machine learned…
Accuracy of Kohn-Sham density functional theory for warm- and hot-dense matter equation of state
Phanish Suryanarayana, Arpit Bhardwaj, Xin Jing +2
We study the accuracy of Kohn-Sham density functional theory (DFT) for warm- and hot-dense matter (WDM and HDM). Specifically, considering a wide range of systems, we perform accur…
Self-consistent convolutional density functional approximations: Application to adsorption at metal surfaces
Sushree Jagriti Sahoo, Qimen Xu, Xiangyun Lei +5
The exchange-correlation (XC) functional in density functional theory is used to approximate multi-electron interactions. A plethora of different functionals is available, but near…
Strain engineering of Zeeman and Rashba effects in transition metal dichalcogenide nanotubes and their Janus variants: An ab initio study
Arpit Bhardwaj, Phanish Suryanarayana
We study the influence of mechanical deformations on the Zeeman and Rashba effects in synthesized transition metal dichalcogenide (TMD) nanotubes and their Janus variants from firs…
On the Effective Mass of Mechanical Lattices with Microstructure
Francesco Fedele, Phanish Suryanarayana, Arash Yavari
We present a general formalism for the analysis of mechanical lattices with microstructure using the concept of effective mass. We first revisit a classical case of microstructure…
Version 2.0.0 -- SPARC: Simulation Package for Ab-initio Real-space Calculations
Boqin Zhang, Xin Jing, Qimen Xu +8
SPARC is an accurate, efficient, and scalable real-space electronic structure code for performing ab initio Kohn-Sham density functional theory calculations. Version 2.0.0 of the s…
Towards understanding flexoelectricity at the nanoscale
David Codony, Phanish Suryanarayana, Irene Arias
We review the authors' recent works on flexoelectricity at the nanoscale [arXiv:2010.01747, arXiv:2010.13899], while emphasizing the role of continuum mechanics in interpreting the…
GPU acceleration of local and semilocal density functional calculations in the SPARC electronic structure code
Abhiraj Sharma, Alfredo Metere, Phanish Suryanarayana +3
We present a GPU-accelerated version of the real-space SPARC electronic structure code for performing Kohn-Sham density functional theory calculations within the local density and…
Assessing the source of error in the Thomas-Fermi-von Weizsäcker density functional
Bishal Thapa, Xin Jing, John E. Pask +2
We investigate the source of error in the Thomas-Fermi-von Weizsäcker (TFW) density functional relative to Kohn-Sham density functional theory (DFT). In particular, through numeric…