Electron-stimulated surface stress relaxation of Si

Narushima, Tetsuya; Itakura, Akiko N.; Kawabe, Takaya; Kitajima, Masahiro
July 2001
Applied Physics Letters;7/30/2001, Vol. 79 Issue 5
Academic Journal
We have observed the nonthermal relaxation of surface stress in Si induced by electron irradiation at room temperature. An atomically thin disordered layer was introduced by Ar ion bombardment. The surface stress change during ion bombardment and the following electron irradiation of Si(100) was measured by means of an optical microcantilever technique. We have found that the compressive stress in the Si surface due to disorder induced by ion bombardment was completely relaxed by electron irradiation at low energy. The criterion for complete relaxation is found not to be total energy deposition, but the number of irradiated electrons. © 2001 American Institute of Physics.


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