THERMAL CONDUCTIVITY OF InAs/ AlSb SUPERLATTICES

Abstract

In this work, we present experimental studies on the cross-plane thermal conductivity of InAs/AlSb superlattices. The thermal conductivities of MBE-grown InAs/AlSb superlattices are measured using the 3 y method from 80 to 300 K. The influence of the growth temperature and postannealing is investigated. Significant reductions in thermal conductivity are observed in these superlattices compared to the predictions of the Fourier heat conduction theory based on the bulk material properties. These results suggest that the interface conditions strongly influence the thermal conductivity.