Faceting at the step flow threshold in epitaxial growth on patterned surfaces

Autor:	Thomas Tiedje, Tian Li, Aleksy K. Jones, Anders Ballestad, Joerg Rottler, Michael Whitwick
Rok vydání:	2009
Předmět:	Faceting Materials science Condensed matter physics Monte Carlo method Nucleation Crystal growth Astrophysics::Cosmology and Extragalactic Astrophysics Kinetic Monte Carlo Facet Condensed Matter Physics Kinetic energy Vicinal Electronic Optical and Magnetic Materials
Zdroj:	Physical Review B. 79
ISSN:	1550-235X 1098-0121
DOI:	10.1103/physrevb.79.205419
Popis:	We identify a kinetic mechanism responsible for the emergence of low-angle facets in recent epitaxial regrowth experiments on patterned surfaces. Kinetic Monte Carlo simulations of vicinal surfaces show that the preferred slope of the facets matches the threshold slope for the transition between step flow and growth by island nucleation. At this crossover slope, the surface step density is minimized and the adatom density is maximized, respectively. A model is developed that predicts the temperature dependence of the crossover slope and hence the facet slope.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c19addda379b67dbb7303aad708e9497 https://doi.org/10.1103/physrevb.79.205419 Zobrazit plný text záznamu