Temperature dependence of SiGe coherent island formation on Si(100): Anomalous reentrant behavior

Document Type

Article

Publication Date

1-1-1998

Abstract

Studies of the temperature dependence (450-800°C) of coherent island formation in SiGe alloys (nominal composition ∼25% Ge) on Si(100) reveal an anomalous islanding behavior. Three dimensional island formation appears to be suppressed at temperatures below 450°C, and again in a narrow temperature window near ∼600°C. At all other temperatures, faceted 3D islands are observed. The anomalous effect at intermediate temperatures is qualitatively explained on the basis of a relative reduction in the driving force due to temperature dependent behavior of Ge segregation and interdiffusion. © 1998 The American Physical Society.

Publication Title

Physical Review Letters

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