20 citations · 31 across the 3 of their papers we have counts for
4 papers
Constrained Density Functional Theory Calculation with Iterative Optimization
D. Kidd, A. S. Umar, K. Varga
An iterative optimization approach that simultaneously minimizes the energy and optimizes the Lagrange multipliers enforcing desired constraints is presented. The method is tested…
Exponential Integrators in Time-Dependent Density Functional Calculations
Daniel Kidd, Cody Covington, Kalman Varga
The integrating factor and exponential time differencing methods are implemented and tested for solving the time-dependent Kohn--Sham equations. Popular time propagation methods us…
Controlled dynamic screening of excitonic complexes in 2D semiconductors
Andrey R. Klots, Benjamin Weintrub, Dhiraj Prasai +4
We report a combined theoretical/experimental study of dynamic screening of excitons in media with frequency-dependent dielectric functions. We develop an analytical model showing…
The biexciton puzzle
David K. Zhang, Daniel W. Kidd, Kálmán Varga
The Stochastic Variational Method (SVM) is used to show that the effective mass model correctly estimates the binding energies of excitons and trions, but fails to predict the expe…