Magnetic circular dichroism spectra from resonant and damped coupled cluster response theory.

Autor: Faber, R., Ghidinelli, S., Hättig, C., Coriani, S.
Předmět:
Zdroj: Journal of Chemical Physics; 9/21/2020, Vol. 153 Issue 11, p1-9, 9p
Abstrakt: A computational expression for the Faraday A term of magnetic circular dichroism (MCD) is derived within coupled cluster response theory and alternative computational expressions for the B term are discussed. Moreover, an approach to compute the (temperature-independent) MCD ellipticity in the context of coupled cluster damped response is presented, and its equivalence with the stick-spectrum approach in the limit of infinite lifetimes is demonstrated. The damped response approach has advantages for molecular systems or spectral ranges with a high density of states. Illustrative results are reported at the coupled cluster singles and doubles level and compared to time-dependent density functional theory results. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index