Ab initio analytical Raman intensities for periodic systems through a coupled perturbed Hartree-Fock/Kohn-Sham method in an atomic orbital basis. I. Theory

Abstract : We present a fully analytical formulation for calculating Raman intensities of crystalline periodic systems using a local basis set. Numerical differentiation with respect to atomic coordinates and with respect to wavevectors is entirely avoided as is the determination of crystal orbital coefficient derivatives with respect to nuclear displacements. Instead, our method utilizes the orbital energy-weighted density matrix and is based on the self-consistent solution of first- and second-order Coupled Perturbed Hartree-Fock/Kohn-Sham equations for the electronic response to external electric fields at the equilibrium geometry. This method has also been implemented in the Crystal program, which uses a Gaussian type basis set. © 2013 AIP Publishing LLC.
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Journal of Chemical Physics, 2013, 139 (16), 〈10.1063/1.4824442〉
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Soumis le : mercredi 4 octobre 2017 - 19:06:35
Dernière modification le : jeudi 11 janvier 2018 - 06:28:13

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L. Maschio, B. Kirtman, Michel Rérat, R. Orlando, R. Dovesi. Ab initio analytical Raman intensities for periodic systems through a coupled perturbed Hartree-Fock/Kohn-Sham method in an atomic orbital basis. I. Theory. Journal of Chemical Physics, 2013, 139 (16), 〈10.1063/1.4824442〉. 〈hal-01610568〉

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