The electronic structure of a single pentagon in a hexagonal carbon lattice has been revealed on an atomic scale by scanning tunneling microscopy. The pentagon is located at the apex of the conical protuberance of the graphitic particle. The enhanced charge density localized at each carbon atom in the pentagon is identified, and the ringlike pattern of the (√3×√3)R30° superstructure of graphite is clearly observed around the pentagon.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)