Electronic Structure Lab

General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
JPCA Supplementary Cover: Study of Self-Interaction Errors in Density Functional Calculations of Magnetic Exchange Coupling Constants
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Study of water polarizability (article published on J. Chem. Phys.)
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Our LSIC project is on the US Dept. of Energy science highlights
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Electronic structure research group team
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Electronic structure research team (2020)
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Water cluster anions: assessing the effect of self-interaction errors in negatively charged water molecules. Journal cover.
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Multi-chromophoric organic heptad antenna
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Fermi-Löwdin orbital self-interaction correction (FLOSIC) center. One of several Computational Chemical Sciences Centers funded by the US Department of Energy.
General interests of the group are understanding the electronic structure of materials using density functional theory. The group works on software development, theory, and applications. Current interests include charge transfer excitations in donor acceptor complexes (organic photovolatics), linear and non linear polarizabilities of molecules.
Local self-interaction correction: the modification to PZSIC to improve the performance of SIC calculations. JCP Editors’ Choice 2019.

Carlos Diaz gets his PhD ceremony

Electronic Structure Lab member Carlos Diaz had his graduation ceremony to award his PhD.

Congratulations Dr. Diaz!!

Krieger-Li-Iafrate approximation article

The article "Fermi-Löwdin-orbital self-interaction correction using the optimized-effective-potential method within the Krieger-Li-Iafrate approximation" is published on Physical Review A. SIC with Krieger-Li-Iafrate (KLI) approximation is an alternative method to Jacobi sweep for solving a FLOSIC problem.

The published article is available at https://journals.aps.org/pra/abstract/10.1103/PhysRevA.103.042811

Polyacene polarizability article is published

Our recent work, "Static dipole polarizabilities of polyacenes using self-interaction-corrected density functional approximations," is published on Journal of Chemical Physics. In this article, we studied the static electric dipole polarizabilities and the vertical ionization potentials of polyacenes with self-interaction correction methods. PZSIC has a tendency to overcorrect polarizabilities whereas LSIC (with quasi-self-consistency) brings the theoretical prediction closer to coupled-cluster single and double values.

FLOSIC in real space

The article, "Implementation of Perdew–Zunger self-interaction correction in real space using Fermi–Löwdin orbitals," is published on Journal of Chemical Physics on 2021-2-23 [J. Chem. Phys. 154, 084112 (2021); doi: 10.1063/5.0031341]. In this work, we discuss implementation of FLOSIC on to SPARC real-space electronic structure code and show some benchmark calculations. This real-space formulation provides an accurate and systematically improvable approach for FLOSIC calculations in the Slater-average form.

"Local self-interaction correction method with a simple scaling factor" accepted to PCCP

Article, "Local self-interaction correction method with a simple scaling factor" was accepted to Physical Chemistry Chemical Physics (PCCP) on December 23rd, 2020. The accepted article is available at https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp06282k/unauth...

Selim's Blog

This Blog has the purpose of write down a weekly update of coding findings and FLOSIC basic runs.

Water dipole polarizability article accepted to Journal of Chemical Physics

Update:
The article was published on Oct 22, 2020.
https://doi.org/10.1063/5.0025601

04-Oct-2020

The article, "Study of self-interaction errors in density functional predictions of dipole polarizabilities and ionization energies of water clusters using Perdew-Zunger and locally scaled self-interaction corrected methods" was accepted to Journal of Chemical Physics for publication.

The preprint version of the article is uploaded to arXiv: link-to-arXiv.

SIC-rSCAN article accepted to PCCP

July 10th, 2020

The article "Assessing the effect of regularization on the molecular properties predicted by SCAN and self-interaction corrected SCAN meta-GGA" (SIC-rSCAN paper) is accepted for publication in Physical Chemistry Chemical Physics today. This work assesses the performance of the rSCAN functional when self-interaction correction is applied.

Accepted manuscript: https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp02717k/unauth...

Good work!

Self-interaction error and binding energies of water cluster on PNAS

May 11, 2020

Article, "Self-interaction error overbinds water clusters but cancels in structural energy differences," was published on PNAS. This work show that the hydrogen bond binding energies of water clusters are improved with a removal of self-interaction error, while keeping the correct isomer energy ordering.

https://doi.org/10.1073/pnas.1921258117
Link to the article

The SOSIC article accepted for publication in the Journal of Chemical Physics

April 10, 2020

The article, "Improvements in the orbitalwise scaling down of Perdew-Zunger self-interaction correction in many-electron regions," is accepted to Journal of Chemical Physics for publication. This article includes our orbital scaling (OSIC) and selective-orbital scaling (SOSIC) work using the FLOSIC implementation.

Picture: iso-orbital indicator used in the OSIC/SOSIC method to identify the different regions in benzene molecule.

The published article is available here.

Pages

Subscribe to