"STM topography of self-assembled atomic gold chains on silicon surface"

Mr Corsin BATTAGLIA. Université de Neuchâtel (Switzerland)

Image Description:
The traditional top-down fabrication methods of the microelectronics industry have been continuously refined to produce ever smaller devices, but are already facing serious difficulties in upholding the trend due to fundamental physical limits. Self-assembly of atoms and molecules on atomically well-defined crystal surfaces into artificial nanostructures provides a promising alternative route to even smaller functional systems. The atomically resolved scanning tunnelling microscopy image shows the topography of an array of self-assembled atomic gold chains fabricated via this bottom-up approach on a silicon surface. The spacing between adjacent chains is only 1.5 nm. Confinement of the electrons within a particular chain results in exotic electronic properties encountered only in one dimension.


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