Research output: Contribution to journal › Conference article › peer-review
Monte Carlo simulation of roughening at step-terraced surfaces. / Kazantsev, D. M.; Shwartz, N. L.; Alperovich, V. L.
In: Journal of Physics: Conference Series, Vol. 1199, No. 1, 012010, 17.04.2019.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - Monte Carlo simulation of roughening at step-terraced surfaces
AU - Kazantsev, D. M.
AU - Shwartz, N. L.
AU - Alperovich, V. L.
PY - 2019/4/17
Y1 - 2019/4/17
N2 - GaAs thermal smoothing at temperatures T ≤ 650°C under conditions close to equilibrium yields surfaces with atomically smooth terraces separated by steps of monatomic height. At higher temperatures T ≥ 700°C, surface smoothing changes to roughening. In the present paper, thermal roughening of a step-terraced surface caused by atomic step flow around step pinning centers is studied using Monte-Carlo simulation. It is proved that the Schwöbel barrier is necessary for step bunching in the presence of step pinning centers. The lower limit of the Schwöbel barrier E S = 0.4 eV is estimated for the GaAs(001) surface.
AB - GaAs thermal smoothing at temperatures T ≤ 650°C under conditions close to equilibrium yields surfaces with atomically smooth terraces separated by steps of monatomic height. At higher temperatures T ≥ 700°C, surface smoothing changes to roughening. In the present paper, thermal roughening of a step-terraced surface caused by atomic step flow around step pinning centers is studied using Monte-Carlo simulation. It is proved that the Schwöbel barrier is necessary for step bunching in the presence of step pinning centers. The lower limit of the Schwöbel barrier E S = 0.4 eV is estimated for the GaAs(001) surface.
UR - http://www.scopus.com/inward/record.url?scp=85065624644&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1199/1/012010
DO - 10.1088/1742-6596/1199/1/012010
M3 - Conference article
AN - SCOPUS:85065624644
VL - 1199
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012010
T2 - 20th Russian Youth Conference on Physics of Semiconductors and Nanostructures, Optoand Nanoelectronics, RYCPS 2018
Y2 - 26 November 2018 through 30 November 2018
ER -
ID: 20039916