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.

More basis testing

Here is a more complete set of basis testing using different basis sets.

Note: Whenever there is a zero in the NRLMOL results, it means that the basis for that atom was not available at the time.

Click here.

Basis testing

We have conducted a test of running NRLMOL with different basis sets to comapre against Gaussian for a series of atoms, differences wher found, here are the energies using basis STO-3G.
We looked at Vanadium to account for the difference.
We tried refining the mesh, it did not work.
We compared the two basis sets used (the were the same).
So the difference in the calculation lies elsewhere.

The Electronic Structure Lab in the Texas section APS in Brownsville

Luis Basurto,Carlos Diaz, Amanda Garnica and Marina Paggen attended the Texas section APS meeting in Brownsville Tx, from Oct. 10 to 12.
http://www.txstate.edu/physics/TSAPS/
An oral presentation was given by Luis.
With poster presentations by Marina, Carlos and Amanda.

DIPOLE and Joint DOS calculation

The latest version of code in the repository (172) now produces equal results for dosjnt.ftn and excite3-orig.f after correcting the smearing factor (it should be set to what ever is used in excite), the expression is:
FUNC=BACKW*VFAC*EXP(-((ERG+EDIFF)/0.01)**2)
with VFAC set to 1.
Also the dipole moment has been checked with what is calculated in jntdos.ftn DOS against apotnl.ftn
The electronic dipole moments are equal. However, the result given in the DIPOLE file (written in apotnl.ftn) has already taken nuclear contributions into account.

Youtube presentation on organic photovoltaics

Although not directly related to the work we do in the lab, this video gives a general introduction to organic photovoltaics

http://www.youtube.com/watch?v=5laLM2YM48M

NRLMOL GUI

The NRLMOL GUI can be downloaded from here.

run it as:
java -jar NRLMOL_GUI.jar

IMRC 2013

Dr. Baruah and Dr. Zope gave presentations at the International Materials Research Congress in Cancun Mexico.
http://www.mrs-mexico.org.mx/imrc2013/
Dr. Baruah's talk was:"Charge transfer excited states of organic donor-acceptor supramolecules"
Dr. Zope's talk was:"Computational search for novel endohedral fullerenes"

Luis Basurto defended his dissertation

Luis Basurto succesfully defended his PhD dissertation on Wednesday July 24 at 11:00AM

Marco Olguin defended his dissertation

Marco Olguin succesfully defended his PhD dissertation on Tuesday July 23 at 3:00pm

GUI tutorial

Sample video of the NRLMOL gui in action.

http://youtu.be/4SsyyCko_EM

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