Phys. Rev. B 66, 075321 (2002) [7 pages]Microscopic mechanisms of surface phase transitions on InAs(001)Received 21 August 2001; revised 25 April 2002; published 15 August 2002 Microscopic mechanisms of the (2×4) to (4×2) surface phase transition on InAs(001) are identified using a combination of theoretical and experimental methods. Two distinct transition stages are found, both rate limited by As2 desorption. The unusually high prefactors observed experimentally are traced back to the microscopic As2 desorption processes. Calculated interactions between As dimers explain the observed disorder of the mixed α2(2×4) and β2(2×4) reconstructions and are not responsible for observed first order behavior of the transition. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.66.075321
DOI:
10.1103/PhysRevB.66.075321
PACS:
68.35.Rh, 68.35.Bs, 68.35.Ja, 68.35.Md
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