Fig. 3: Charge redistribution at the cyclo-P5/Ag(111) interface.
From: Probing charge redistribution at the interface of self-assembled cyclo-P5 pentamers on Ag(111)
a Frequency shift Δf as a function of sample bias voltage Vs, measured across a pentamer domain shown in the STM image by a dashed line, (parameters : f0 = 26 kHz, A = 80 pm). b Single Δf(V) curves at the pentamer assembly (orange) as compared to the Ag(111) (black). Dashed lines mark the top of the parabola allowing the extract an LCPD shift ΔV* = 0.22 V. c Top and side views of the charge redistribution between pentamers and Ag(111). Blue (red) areas show electron accumulation (depletion). The white and black dashed lines refer to the position of the P5 assembly and the last Ag layer, respectively. The isosurface level of the plot is set to ± 13 × 10−3 e Å−3. d Schematic illustration of the charge redistribution at the P5/Ag(111) interface leading to an inward surface dipole (D) moment and a local work function change (\({\phi }_{{{{{\rm{P}}}}}_{5}/{{{\rm{Ag}}}}}\)). The cyclo-P5 layer is colored orange. ΔV* refers to the LCPD change.
