Improving Rydberg Excitations within Time-Dependent Density Functional Theory with Generalized Gradient Approximations: The Exchange-Enhancement-for-Large-Gradient Scheme
Abstract
Time-dependent density functional theory (TDDFT) with conventional local and hybrid functionals such as the local and hybrid generalized gradient approximations (GGA) seriously underestimates the excitation energies of Rydberg states, which limits its usefulness for applications such as spectroscopy and photochemistry. We present here a scheme that modifies the exchange-enhancement factor to improve GGA functionals for Rydberg excitations within the TDDFT framework while retaining their accuracy for valence excitations and for the thermochemical energetics calculated by ground-state density functional theory. The scheme is applied to a popular hybrid GGA functional and tested on data sets of valence and Rydberg excitations and atomization energies, and the results are encouraging. The scheme is simple and flexible. It can be used to correct existing functionals, and it can also be used as a strategy for the development of new functionals.
- Authors:
-
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Publication Date:
- Research Org.:
- Univ. of Minnesota, Minneapolis, MN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1252036
- Alternate Identifier(s):
- OSTI ID: 1455126
- Grant/Contract Number:
- SC0008666
- Resource Type:
- Published Article
- Journal Name:
- Journal of Chemical Theory and Computation
- Additional Journal Information:
- Journal Name: Journal of Chemical Theory and Computation Journal Volume: 11 Journal Issue: 7; Journal ID: ISSN 1549-9618
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Li, Shaohong L., and Truhlar, Donald G. Improving Rydberg Excitations within Time-Dependent Density Functional Theory with Generalized Gradient Approximations: The Exchange-Enhancement-for-Large-Gradient Scheme. United States: N. p., 2015.
Web. doi:10.1021/acs.jctc.5b00369.
Li, Shaohong L., & Truhlar, Donald G. Improving Rydberg Excitations within Time-Dependent Density Functional Theory with Generalized Gradient Approximations: The Exchange-Enhancement-for-Large-Gradient Scheme. United States. https://doi.org/10.1021/acs.jctc.5b00369
Li, Shaohong L., and Truhlar, Donald G. Wed .
"Improving Rydberg Excitations within Time-Dependent Density Functional Theory with Generalized Gradient Approximations: The Exchange-Enhancement-for-Large-Gradient Scheme". United States. https://doi.org/10.1021/acs.jctc.5b00369.
@article{osti_1252036,
title = {Improving Rydberg Excitations within Time-Dependent Density Functional Theory with Generalized Gradient Approximations: The Exchange-Enhancement-for-Large-Gradient Scheme},
author = {Li, Shaohong L. and Truhlar, Donald G.},
abstractNote = {Time-dependent density functional theory (TDDFT) with conventional local and hybrid functionals such as the local and hybrid generalized gradient approximations (GGA) seriously underestimates the excitation energies of Rydberg states, which limits its usefulness for applications such as spectroscopy and photochemistry. We present here a scheme that modifies the exchange-enhancement factor to improve GGA functionals for Rydberg excitations within the TDDFT framework while retaining their accuracy for valence excitations and for the thermochemical energetics calculated by ground-state density functional theory. The scheme is applied to a popular hybrid GGA functional and tested on data sets of valence and Rydberg excitations and atomization energies, and the results are encouraging. The scheme is simple and flexible. It can be used to correct existing functionals, and it can also be used as a strategy for the development of new functionals.},
doi = {10.1021/acs.jctc.5b00369},
journal = {Journal of Chemical Theory and Computation},
number = 7,
volume = 11,
place = {United States},
year = {Wed Jun 17 00:00:00 EDT 2015},
month = {Wed Jun 17 00:00:00 EDT 2015}
}
https://doi.org/10.1021/acs.jctc.5b00369
Web of Science
Works referencing / citing this record:
MN15: A Kohn–Sham global-hybrid exchange–correlation density functional with broad accuracy for multi-reference and single-reference systems and noncovalent interactions
journal, January 2016
- Yu, Haoyu S.; He, Xiao; Li, Shaohong L.
- Chemical Science, Vol. 7, Issue 8
MN15: A Kohn–Sham global-hybrid exchange–correlation density functional with broad accuracy for multi-reference and single-reference systems and noncovalent interactions
journal, January 2016
- Yu, Haoyu S.; He, Xiao; Li, Shaohong L.
- Chemical Science, Vol. 7, Issue 8
Perspective: Kohn-Sham density functional theory descending a staircase
journal, October 2016
- Yu, Haoyu S.; Li, Shaohong L.; Truhlar, Donald G.
- The Journal of Chemical Physics, Vol. 145, Issue 13
The ring-opening channel and the influence of Rydberg states on the excited state dynamics of furan and its derivatives
journal, August 2018
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- The Journal of Chemical Physics, Vol. 149, Issue 8