Mean-trajectory approximation for charge- and energy-transfer processes at surfaces

Shin Ichi Sawada*, Abraham Nitzan, Horia Metiu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


We discuss electronic energy and charge-transfer processes at surfaces in terms of curve-crossing models. We suggest that at low kinetic energies the trajectory approximation should be replaced by a mean-trajectory approximation (MTA), in which the nuclear motion gets feedback from and adjusts to the curve-crossing dynamics. We discuss two derivations of MTA by using an eikonal approximation and a path-integral method. The effects of phonon or electron-hole pair excitations on the charge-transfer process are also incorporated.

Original languageEnglish
Pages (from-to)851-867
Number of pages17
JournalPhysical Review B-Condensed Matter
Issue number2
StatePublished - 1985
Externally publishedYes


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