PMID: 15245297Jul 13, 2004Paper

Critical role of surface steps in the alloying of Ge on Si(001)

Physical Review Letters
J B HannonR M Tromp

Abstract

Using low-energy electron microscopy, we show that intermixing of Ge on Si(001) during growth is enhanced on stepped surfaces and is hindered on terraces where step flow does not occur. On large terraces we have identified a dramatic and unanticipated structural rearrangement that facilitates intermixing: Pairs of steps spontaneously form and migrate over the surface, leaving alloyed regions in their wake. The driving force for step formation is the entropy gain associated with the enhanced intermixing of Ge.

References

Apr 15, 1988·Physical Review. B, Condensed Matter·A Qteish, R Resta
Oct 15, 1996·Physical Review. B, Condensed Matter·N C Bartelt, R M Tromp
Mar 15, 1993·Physical Review. B, Condensed Matter·R M Tromp
Sep 25, 1995·Physical Review Letters·L PattheyL S Johansson
Sep 6, 2000·Physical Review Letters·J B MaxsonM G Lagally
Oct 6, 2000·Physical Review Letters·B P UberuagaM Olmstead

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Citations

Dec 24, 2013·The Journal of Chemical Physics·Jess Stausholm-MøllerBjørk Hammer
Mar 11, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M S Altman
May 16, 2007·Physical Review Letters·Neelima PaulBert Voigtländer
Apr 7, 2010·Physical Review Letters·E Bussmann, B S Swartzentruber
Oct 2, 2009·Physical Review Letters·Konstantin RomanyukBert Voigtländer
Jan 1, 2005·Journal of Chemical Theory and Computation·Daniel Sebastiani, Luigi Delle Site

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