C$_{60}$ on nanostructured Nb-doped SrTiO$_{3}$(001) surfaces*

Nanostructured SrTiO$_{3}$(001) surfaces were carefully calibrated with respect to Si(111)-$(7\times 7)$ surface using STM. The surface patterns for observed nanostructures were assigned. Sequential C$_{60}$ deposition onto these nanostructured templates reveals distinct growth modes, including discrete small C$_{60}$ islands on $c(4\times 2)$ reconstruction surface, parallel one-dimensional C$_{60}$ chains on $(6\times 2)$dilines, C$_{60}$ double-chains on $(8\times 2)$trilines, epitaxial C$_{60}$ close packed adlayers over $(11\times 2)$tetralines, and two-dimensional ordered C$_{60}$ dimer arrays on $(7\times 6)$waffles. These structural diversities mainly stem from the relatively strong adsorbate-substrate interactions as well as the surface topography demands. The nanostructured oxide surfaces as templates are thus with great potentials in the molecular nanoarchitecture.