Lazarevicite-type short-range ordering in ternary III-V nanowires
2016
Stabilizing ordering instead of randomness in alloy semiconductor materials is a powerful means to change
their physical properties. We used scanning tunneling and transmission electron microscopies to reveal the
existence of an unrecognized ordering in ternary III-V materials. The lazarevicite short-range order, found in the
shell of InAs
1
−
x
Sb
x
nanowires, is driven by the strong Sb-Sb repulsion along
110
atomic chains during their
incorporation on unreconstructed
{
110
}
sidewalls. Its spontaneous formation under group-III-rich conditions of
growth offers the prospect to broaden the limited classes of ordered structures occurring in III-V semiconductor
alloys.
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