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arXiv 1010.0307cond-mat.mtrl-sci
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SrTiO3/LaGaO3和SrTiO3/LaAlO3的脉冲laser沉积:等离子体羽流效应

Pulsed laser deposition of SrTiO3/LaGaO3 and SrTiO3/LaAlO3: plasma plume effects

C. Aruta, S. Amoruso, R. Bruzzese, X. Wang, D. Maccariello, F. Miletto Granozio, U. Scotti di Uccio

摘要:

分析了脉冲激光沉积SrTiO 3/LaGa O 3和SrTiO 3/LaAl O 3界面的烧蚀物质的动能。用快速摄影和空间分辨发射光谱研究了LaGaO 3和LaAlO 3等离子体羽流。反射高能电子衍射进行证明一个逐层生长高达10-1毫巴的氧气压力。高能等离子体羽流的二维生长和在不同的氧气生长压力的界面缺陷的存在下的作用进行了讨论,鉴于在这样的极性/非极性接口开发的导电性能。

英文摘要:

Pulsed laser deposition of SrTiO3/LaGaO3 and SrTiO3/LaAlO3 interfaces has been analyzed with a focus on the kinetic energy of the ablated species. LaGaO3 and LaAlO3 plasma plumes were studied by fast photography and space-resolved optical emission spectroscopy. Reflection high energy electron diffraction was performed proving a layer-by-layer growth up to 10-1 mbar oxygen pressure. The role of the energetic plasma plume on the two-dimensional growth and the presence of interfacial defects at different oxygen growth pressure has been discussed in view of the conducting properties developing at such polar/non-polar interfaces.

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