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Metal-supported high crystalline Bi _2Se _3 quintuple layers

机译:金属支撑的高结晶Bi _2Se _3五层层

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Atomically flat thin films of Bi _2Se _3 were grown on Au(111) metal substrate using molecular beam epitaxy. Hexagonal atomic structures and quintuple layer steps were observed at the surfaces of grown films using scanning tunneling microscopy. Multiple sharp peaks from (003) family layers were characterized by x-ray diffraction measurements. The atomic stoichiometry of Bi and Se was considered using x-ray photoemission spectroscopy. Moiré patterns were obtained at the surfaces of one quintuple layer films due to lattice mismatch between Bi _2Se _3 and Au. Our experiments suggest that Au is a reasonable material for electrodes in Bi _2Se _3 devices.
机译:Bi _2Se _3原子平面薄膜使用分子束外延生长在Au(111)金属衬底上。使用扫描隧道显微镜在生长的膜的表面观察到六边形原子结构和五重层台阶。 (003)族层的多个尖峰通过X射线衍射测量来表征。 Bi和Se的原子化学计量用X射线光电子能谱来考虑。由于Bi _2Se _3和Au之间的晶格失配,在一个五层膜的表面上获得了莫尔图案。我们的实验表明,Au是Bi _2Se _3器件中电极的合理材料。

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