A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation

Ndome H, Welsch R, Eisfeld W (2012)
The Journal of Chemical Physics 136(3).

Journal Article | Published | English

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Abstract
A new method has been developed to generate fully coupled potential energy surfaces including derivative and spin-orbit coupling. The method is based on an asymptotic (atomic) representation of the molecular fine structure states and a corresponding diabatization. The effective relativistic coupling is described by a constant spin-orbit coupling matrix and the geometry dependence of the coupling is accounted for by the diabatization. This approach is very efficient, particularly for certain systems containing a very heavy atom, and yields consistent results throughout nuclear configuration space. A first application to a diatomic system is presented as proof of principle and is compared to accurate ab initio calculations. However, the method is widely applicable to general polyatomic systems in full dimensionality, containing several relativistic atoms and treating higher order relativistic couplings as well. (C) 2012 American Institute of Physics. [doi:10.1063/1.3675846]
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Ndome H, Welsch R, Eisfeld W. A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation. The Journal of Chemical Physics. 2012;136(3).
Ndome, H., Welsch, R., & Eisfeld, W. (2012). A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation. The Journal of Chemical Physics, 136(3).
Ndome, H., Welsch, R., and Eisfeld, W. (2012). A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation. The Journal of Chemical Physics 136.
Ndome, H., Welsch, R., & Eisfeld, W., 2012. A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation. The Journal of Chemical Physics, 136(3).
H. Ndome, R. Welsch, and W. Eisfeld, “A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation”, The Journal of Chemical Physics, vol. 136, 2012.
Ndome, H., Welsch, R., Eisfeld, W.: A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation. The Journal of Chemical Physics. 136, (2012).
Ndome, Hameth, Welsch, Ralph, and Eisfeld, Wolfgang. “A new method to generate spin-orbit coupled potential energy surfaces: Effective relativistic coupling by asymptotic representation”. The Journal of Chemical Physics 136.3 (2012).
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