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Electromigration effect on the surface morphology during the Ge deposition on Si(1 1 1) at high temperatures. / Shklyaev, A. A.; Latyshev, A. V.
в: Applied Surface Science, Том 465, 28.01.2019, стр. 10-14.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Electromigration effect on the surface morphology during the Ge deposition on Si(1 1 1) at high temperatures
AU - Shklyaev, A. A.
AU - Latyshev, A. V.
PY - 2019/1/28
Y1 - 2019/1/28
N2 - The directional atom drift under direct electric current (DC) flowing through a sample is a unique tool for the surface morphology manipulation, which was previously studied in detail for Si surfaces. We show that electromigration can significantly influence the heterostructures growth process. Without electromigration, the surface morphology is formed under the action of two driving forces determined by a surface and strain energy minimization. DC shifts the balance between them in favor of one of them, depending on the DC direction, producing unusual surface nanostructures during the Ge deposition on Si(1 1 1) at 850–900 °C. When electromigration inhibits the surface energy minimization, the high atomic steps are formed. Their edges became wavy and unstable when the step edges reached the height larger than 15 nm. The instability induced disintegration of the step edges with the flat-shaped islands formation.
AB - The directional atom drift under direct electric current (DC) flowing through a sample is a unique tool for the surface morphology manipulation, which was previously studied in detail for Si surfaces. We show that electromigration can significantly influence the heterostructures growth process. Without electromigration, the surface morphology is formed under the action of two driving forces determined by a surface and strain energy minimization. DC shifts the balance between them in favor of one of them, depending on the DC direction, producing unusual surface nanostructures during the Ge deposition on Si(1 1 1) at 850–900 °C. When electromigration inhibits the surface energy minimization, the high atomic steps are formed. Their edges became wavy and unstable when the step edges reached the height larger than 15 nm. The instability induced disintegration of the step edges with the flat-shaped islands formation.
KW - Electromigration
KW - Ge growth on Si(1 1 1)
KW - Nanostructures
KW - Si/Ge heterostructures
KW - Ge growth on Si(111)
KW - INSTABILITY
KW - SUBLIMATION
KW - GRAPHENE
KW - SEMICONDUCTOR SURFACES
KW - ANISOTROPY
KW - GERMANIUM
KW - SILICON NANOSTRUCTURES
KW - SIGE ISLAND FORMATION
KW - GROWTH
KW - SCANNING-TUNNELING-MICROSCOPY
UR - http://www.scopus.com/inward/record.url?scp=85053527200&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2018.09.119
DO - 10.1016/j.apsusc.2018.09.119
M3 - Article
AN - SCOPUS:85053527200
VL - 465
SP - 10
EP - 14
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -
ID: 16632320