10.6084/m9.figshare.5480854.v1 Ben Warner Ben Warner Toby Gill Toby Gill Cyrus Hirjibehedin Cyrus Hirjibehedin Figure 1.pxp Hirjibehedin Research Group 2017 silicene Iron Phthalocyanines scanning tunnelling microscopy scanning tunnelling spectroscopy Molecular orbitals Condensed Matter Physics 2017-10-11 13:31:28 Figure https://hirjibehedin-research.figshare.com/articles/figure/Figure_1_pxp/5480854 <div>(A) STM topographic image of FePc molecules on silicene/ZrB2 (17.53 nm x 8.71</div><div>nm; Vset = -1 V, Iset = 0.5 nA). The cross-shaped molecules adsorb at the edges of the striped</div><div>domains. The linear nature of these domains enables the creation chains of molecules on the</div><div>surface. The frontier molecular orbital can also be observed. In the inset, white lines have</div><div>been added between the silicene ‘up’ atoms to highlight the lattice and purple lines mark the</div><div>binding angle. (B) Same topographic image at positive bias (Vset = +1 V, Iset = 0.5 nA). The</div><div>molecules now have a triangular profile, and the domain boundaries, as well as kinks that</div><div>appear when a domain boundary shifts to a neighboring row of Si ‘up’ atoms, are more clearly</div><div>resolved. (C) dI/dV map of a FePc molecule bound upon a silicene domain boundary taken at</div><div>-0.7 V shows that the feature observed is the frontier orbital of the FePc molecule. (D) Lobes</div><div>of the dI/dV map plotted over topographic image of the molecule show the lobes align with</div><div>the molecule (Vset= -0.7V, Iset=0.5 nA).</div>