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Issue 31, 2019

Combining Meyer–Miller Hamiltonian with electronic structure methods for on-the-fly nonadiabatic dynamics simulations: implementation and application

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Abstract

The semiclassical approaches such as the Meyer–Miller mapping Hamiltonian in conjunction with the symmetrical quasi-classical windowing (MM/SQC) method have been widely used to study nonadiabatic processes in photochemistry but still limited to model Hamiltonians. In this work we implemented the MM/SQC method combined with electronic structure calculations at the level of OM2/MRCI and the on-the-fly nonadiabatic dynamics simulations. The two-state-involved photoisomerization process of cis-azobenzene is employed as a realistic molecular system for validation. The MM/SQC method is able to reproduce the experimental results and provides an alternative to the conventional surface hopping simulations. The optimal windowing procedures such as the window functions and parameters in MM/SQC are suggested for future applications.

Graphical abstract: Combining Meyer–Miller Hamiltonian with electronic structure methods for on-the-fly nonadiabatic dynamics simulations: implementation and application

Article information


Submitted
12 May 2019
Accepted
17 Jul 2019
First published
17 Jul 2019

Phys. Chem. Chem. Phys., 2019,21, 17109-17117
Article type
Paper

Combining Meyer–Miller Hamiltonian with electronic structure methods for on-the-fly nonadiabatic dynamics simulations: implementation and application

D. Tang, W. Fang, L. Shen and G. Cui, Phys. Chem. Chem. Phys., 2019, 21, 17109 DOI: 10.1039/C9CP02682G

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