PMID: 15245175Jul 13, 2004Paper

Kinetics in surface reconstructions on GaAs(001)

Physical Review Letters
Akihiro OhtakeNobuyuki Koguchi

Abstract

We have successfully controlled the surface structures of GaAs(001) by changing incident As-molecular species. Under As4 fluxes, the c(4 x 4) reconstruction with Ga-As dimers [c(4 x 4)alpha structure] is obtained, but the formation of three As-As dimer structures [c(4 x 4)beta structure] is kinetically limited. On the other hand, the structure change from the (2 x 4), through c(4 x 4)alpha, to c(4 x 4)beta phases is observed under As2 fluxes. We found that the c(4 x 4)alpha structure is energetically metastable and provides a kinetic pathway for the structure change between the (2 x 4) and c(4 x 4)beta phases under As2 fluxes.

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Citations

Mar 17, 2015·The Journal of Chemical Physics·Thomas BruhnPatrick Vogt
Jun 19, 2018·Nanotechnology·Sergio BiettiStefano Sanguinetti
Feb 9, 2005·Physical Review Letters·Akihiro OhtakeNobuyuki Koguchi
Feb 21, 2006·Physical Review Letters·Masamitu Takahasi, Jun'ichiro Mizuki

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