Temperature-Induced Four-Fold-on-Six-Fold Symmetric Heteroepitaxy, Rocksalt SmN on Hexagonal AlN
作者： Jay R. Chan , Stéphane Vézian , Joe Trodahl , Mohamed Al Khalfioui , Benjamin Damilano
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摘要: We report on the occurrence of rotational domains involving 4-fold symmetric epitaxy a hexagonal net, rare case in literature. A temperature-driven crossover from fully (111)- to (001)-oriented samarium nitride grown by molecular beam (0001) aluminum is observed means situ reflection high energy electron diffraction, scanning tunnelling microscopy studies, and ex X-ray diffraction. Using an especially rich set growth conditions nitrogen precursors, we observe key role played kinetics, with strong thermal cracking ammonia source re-evaporation Sm adatoms occurring same temperature range orientation crossover.
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