Excitonic mechanism of the photoinduced surface restructuring of copper

Molotskii, Michel
August 2009
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p084103
Academic Journal
An explanation for the photoinduced reconstruction of Cu single-crystal surfaces that was observed by Ernst et al. [Science 279, 679 (1998)] under the influence of visible light is proposed. It is suggested that reconstruction can be attributed to the energy released during the nonradiative decay of excitons that were excited by light irradiation and captured on surface active centers. The estimates performed show that exciton decay on surface steps and adatoms releases enough energy to create surface defects.


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