Abajo, F. J. Garcia de and Cordon, J. and Corso, M. and Schiller, F. and Ortega, J. E. (2010) Lateral engineering of surface states-towards surface-state nanoelectronics. nanoscale .
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Patterned metal surfaces can host electron quantum waves that display interference phenomena over distances of a few nanometres, thus providing excellent information carriers for future atomic-scale devices. Here we demonstrate that collimation and waveguiding of surface electrons can be realized in silver-induced strain dislocation networks on Cu(111) surfaces, as a conceptual proof-of-principle of surface-state nanoelectronics (SSNE). The Ag/Cu(111) system exhibits featured surface bands with gaps at the Fermi energy, which are basic requirements for a potential SSNE material. We establish a solid analogy between the behavior of surface-state electrons and surface plasmons in patterned metal surfaces, thus facilitating the transfer of existing knowledge on plasmonic structures to the new scenario presented by engineered electronic surface-state nanostructures, with the advantage of a 1000-fold reduction in wavelength and geometrical parameters.
|Subjects:||Material Science > Nanostructured materials|
|Deposited On:||02 Jun 2010 18:22|
|Last Modified:||19 Aug 2010 09:14|
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