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Title: Real time propagation of the exact two component time-dependent density functional theory

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4962422· OSTI ID:1467884

We report the development of a real time propagation method for solving the time-dependent relativistic exact two-component density functional theory equations (RT-X2C-TDDFT). The method is fundamentally non-perturbative and may be employed to study nonlinear responses for heavy elements which require a relativistic Hamiltonian. Here, we apply the method to several group 12 atoms as well as heavy-element hydrides, comparing with the extensive theoretical and experimental studies on this system, which demonstrates the correctness of our approach. Because the exact two-component Hamiltonian contains spin-orbit operators, the method is able to describe the non-zero transition moment of otherwise spin-forbidden processes in non-relativistic theory. Furthermore, the two-component approach is more cost effective than the full four-component approach, with similar accuracy. The RT-X2C-TDDFT will be useful in future studies of systems containing heavy elements interacting with strong external fields.

Research Organization:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF)
Grant/Contract Number:
SC0006863
OSTI ID:
1467884
Alternate ID(s):
OSTI ID: 1324365
Journal Information:
Journal of Chemical Physics, Vol. 145, Issue 10; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 65 works
Citation information provided by
Web of Science

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Cited By (11)

Modeling L 2,3 -edge X-ray absorption spectroscopy with linear response exact two-component relativistic time-dependent density functional theory journal June 2019
Theoretical investigation of quantum confinement on the Rashba effect in ZnO semiconductor nanocrystals journal January 2020
Environmental Effects with Frozen-Density Embedding in Real-Time Time-Dependent Density Functional Theory Using Localized Basis Functions journal July 2020
Momentum-resolved TDDFT algorithm in atomic basis for real time tracking of electronic excitation text January 2017
Relativistic four-component linear damped response TDDFT for electronic absorption and circular dichroism calculations journal November 2019
Momentum-resolved TDDFT algorithm in atomic basis for real time tracking of electronic excitation journal October 2018
Resolving the ultrafast intersystem crossing in a bimetallic platinum complex journal September 2019
An efficient implementation of two-component relativistic density functional theory with torque-free auxiliary variables journal July 2018
Resolution-of-identity accelerated relativistic two- and four-component electron dynamics approach to chiroptical spectroscopies journal November 2018
Toward the evaluation of intersystem crossing rates with variational relativistic methods journal August 2019
Computational simulation of vibrationally resolved spectra for spin-forbidden transitions journal May 2018

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