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Composition modulation by twinning in InAsSb nanowires

机译:在INASSB纳米线中通过孪生组成调节

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We observe a composition modulated axial heterostructure in zincblende (ZB) InAs0.90Sb0.10 nanowires initiated by pseudo-periodic twin boundaries using scanning tunneling microscopy. The twin boundaries exhibit four planes with reduced Sb concentration due to a lower Sb incorporation during lateral overgrowth of a 4H wurtzite as compared to a ZB stacking sequence. We anticipate that this leads to compositional band offsets in addition to known structural band offsets present between 4H and ZB polytypes, changing the band alignment from type II to type I.
机译:我们观察在Zincblende(Zb)中的组合物调节轴向异质结构,其使用扫描隧道显微镜通过伪周期性双界引发的纳米线。 由于与ZB堆叠序列相比,双界性具有降低的Sb浓度降低了Sb浓度的四个平面。 我们预期这导致组成带偏移除了在4H和ZB多型之间存在的已知结构频带偏移之外,从II型键入I型的带对准。

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