The Low Energy Auger Electron Spectroscopy Lines as an Index of the Ba Overlayer Order on the Ni(110) Surface

D. Vlachos, M. Kamaratos, S. Foulias
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Abstract

We investigate the interaction of Ba with the Ni(110) surface at elevated temperatures by means of Auger electron spectroscopy and low energy electron diffraction. The results show that annealing of the substrate causes desorption and ordering of the initially amorphous overlayer, resulting in c and structures. It is observed that the induced ordering crucially affects the lineshape of the double Auger transition line Ba(73 eV)N45O23P1, establishing this line as an index of ordering of the Ba overlayer. The underlying physics of this effect is discussed.
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低能俄歇能谱线作为Ni(110)表面Ba层序的指标
利用俄歇电子能谱和低能电子衍射研究了高温下Ba与Ni(110)表面的相互作用。结果表明:衬底的退火使初始非晶层脱附有序,形成c和结构;观察到诱导有序对双俄歇过渡线Ba(73 eV)N45O23P1的线形有重要影响,并将其作为Ba层有序的指标。讨论了这种效应的基本物理原理。
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