Nature of heterointerfaces in GaAs/InAs and InAs/GaAs axial nanowire heterostructures

作者：Paladugu Mohanchand; Zou Jin^*; Guo Ya Nan; Zhang Xin; Kim Yong; Joyce Hannah J; Gao Qiang; Tan H Hoe; Jagadish C

来源：Applied Physics Letters, 2008, 93(10): 101911.

DOI：10.1063/1.2978959

The structural and compositional characteristics of heterointerfaces of Au-catalyzed GaAs/InAs and InAs/GaAs axial nanowire heterostructures were comprehensively investigated by transmission electron microscopy. It has been found that the GaAs/InAs interface is not sharp and contains an InGaAs transition segment, and in contrast, the InAs/GaAs interface is atomically sharp. This difference in the nature of heterointerfaces can be attributed to the difference in the affinity of the group III elements with the catalyst material.

• 出版日期2008-9-8