Title
Natural Transition Orbitals For Complex Two-Component Excited State Calculations
Abstract
While the natural transition orbital (NTO) method has allowed electronic excitations from time-dependent Hartree-Fock and density functional theory to be viewed in a traditional orbital picture, the extension to multicomponent molecular orbitals such as those used in relativistic two-component methods or generalized Hartree-Fock (GHF) or generalized Kohn-Sham (GKS) is less straightforward due to mixing of spin-components and the inherent inclusion of spin-flip transitions in time-dependent GHF/GKS. An extension of single-component NTOs to the two-component framework is presented, in addition to a brief discussion of the practical aspects of visualizing two-component complex orbitals. Unlike the single-component analog, the method explicitly describes the spin and frequently obtains solutions with several significant orbital pairs. The method is presented using calculations on a mercury atom and a CrO2Cl2 complex.
Year
DOI
Venue
2020
10.1002/jcc.26196
JOURNAL OF COMPUTATIONAL CHEMISTRY
Keywords
DocType
Volume
generalized Hartree-Fock, generalized Kohn-Sham, natural transition orbitals, relativistic methods, TDDFT, two-component electronic structure method
Journal
41
Issue
ISSN
Citations 
16
0192-8651
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
Joseph M Kasper100.34
Xiaosong Li212.09