Alloy phase separation in InAs/InAlAs/InP nanostructure superlattices studied by finite element calculation
Abstract The alloy phase separation effect in InAlAs spacer layer of InAs/InAlAs nanostructure superlattices was studied by two dimensional finite element calculation. The calculation results showed that InAs islands with wide top would prefer to induce "V" like In rich InAlAs arms above InAs islands in InAlAs spacer layer, while InAs islands with narrow top would promote the formation of "I" like In rich InAlAs arms above InAs islands in InAlAs spacer layer which corresponded well with the experimental results reported in Ref. [9]