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Growth and Characterization of Epitaxially Stabilized Pseudomorphic α-Sn/Si Heterostructures
Published online by Cambridge University Press: 10 February 2011
Abstract
Growth and structural characterization of ultrathin, coherently strained oc-Sn/Si quantum well heterostructures have been performed. Severe Sn segregation to the surface during growth, which prevents growth of these structures at ordinary Si epitaxy temperatures, has been minimized by substrate temperature and growth rate modulations during molecular beam epitaxy. Single Sn/Si quantum wells grown with Sn coverage up to 1.4 ML have been verified to be pseudomorphic by transmission electron microscopy and X-ray rocking curve analysis. Similarly, pseudomorphic superlattices with up to 10 periods of 1 ML Sn/7.7 nm Si have been verified to be free of extended defects.
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- Copyright © Materials Research Society 1998