1986
DOI: 10.1002/9780470142899.ch3
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Correlation Effects in the Ionization of Molecules: Breakdown of the Molecular Orbital Picture

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Cited by 563 publications
(146 citation statements)
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“…The OVGF is very practical and computationally simple, and it has found several applications to studies of ionization spectra [8][9][10][11][12]. However, it becomes inaccurate whenever inner-and outer-valence ionization energies (IEs) are subject to shake-up contaminations [13][14][15]. In such cases one needs to resort at least to the third-order algebraic diagrammatic construction [ADC (3)] method [16,17].…”
Section: Introductionmentioning
confidence: 99%
“…The OVGF is very practical and computationally simple, and it has found several applications to studies of ionization spectra [8][9][10][11][12]. However, it becomes inaccurate whenever inner-and outer-valence ionization energies (IEs) are subject to shake-up contaminations [13][14][15]. In such cases one needs to resort at least to the third-order algebraic diagrammatic construction [ADC (3)] method [16,17].…”
Section: Introductionmentioning
confidence: 99%
“…This is predicted to be followed by a migration of electric charge within the molecule that may last up to few femtoseconds before the onset of nuclear dynamics. 3 If an electron is "suddenly" 4 removed from a molecule by ionization it will find itself in a superposition of electronic states, which will then evolve in time. However, the gradient with respect to the nuclear motion will not be zero, since the equilibrium geometry of the ionized state and the neutral state would be different.…”
Section: Introductionmentioning
confidence: 99%
“…The breakdown mostly occurs when the occupied levels are energetically close to the vacant levels. Whereas for atoms this breakdown of the quasi-particle picture is rather exceptional, it is frequently seen in molecules [CDSN07]. This behavior is due to the small gap between occupied and unoccupied orbitals in some molecules and the large number of occupied orbitals in the valence region.…”
Section: 12a Molecular Physicsmentioning
confidence: 99%