Epitaxial Growth of Bi/Sb Superlattice

Abstract
The present work describes the heteroepitaxial growth at room temperature of a Bi/Sb superlattice film, for the first time, on a single-crystal cleaved BaF2(111) substrate. Four peaks were observed in small-angle X-ray diffraction of the Bi/Sb superlattice film, denoting good periodicity. In situ reflection high-energy electron diffraction (RHEED) observations show epitaxial growth after 60 layers of superlattice deposition. Cross-sectional transmission electron microscopy (TEM) observations also show the single-crystal image and diffraction pattern.