Fig. 5: Schematic representation of charge transfer.
From: Optical-field driven charge-transfer modulations near composite nanostructures

Energy parabola shift along the energy axis and the reaction coordinates showing the Gibbs free gain (ΔGCT, driving force), the activation energy \(\left( {{\Delta} G_{{\mathrm{CT}}}^ \ast } \right)\), and the reorganization energy (λCT).