Physics – Condensed Matter – Materials Science
Scientific paper
1997-10-09
Appl. Surf. Sci. {\bf 123}, 199 (1998)
Physics
Condensed Matter
Materials Science
17 pages, 5 figures (postscript), Latex, APS, http://www.icmm.csic.es/Pandres/pedro.htm. Appl. Surf. Sci. (in press)
Scientific paper
We analyze BEEM experiments. At low temperatures and low voltages, near the threshold value of the Schottky barrier, the BEEM current is dominated by the elastic component. Elastic scattering by the lattice results in the formation of focused beams and narrow lines in real space. To obtain the current injected in the semiconductor, we compute the current distribution in reciprocal space and, assuming energy and $k_{\parallel}$ conservation. Our results show an important focalization of the injected electron beam and explain the similarity between BEEM currents for Au/Si(111) and Au/Si(100).
de Andres Pedro L.
Flores Fernando
Garcia-Vidal Francisco J.
Reuter Karsten
Sestovic Dragan
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