首页> 外文期刊>Physica, C. Superconductivity and its applications >CRYOGENIC SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY ON THE (110) SURFACES OF YBA2CU3OY EPITAXIAL THIN FILMS
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CRYOGENIC SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY ON THE (110) SURFACES OF YBA2CU3OY EPITAXIAL THIN FILMS

机译:YBA2CU3OY环氧薄膜(110)表面的低温扫描隧道显微镜/光谱。

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As-grown surfaces of (110) oriented laser-ablated YBa2Cu3Oy films have been investigated by scanning tunneling microscopy and spectroscopy, for the first time, at room temperature and 4.2 K. We found semi-macro scale surface structures along the c-axis, which were composed of(110) top planes and (100)/(010) lateral planes. The orthorhombic atomic lattice image, corresponding to Cu atom arrangement of both CuO2 double layers and CuO chain layers alternately, was observed on the (110) top plane at 4.2 K. Furthermore, broad swell-and-depression structures were observed as stripes perpendicular to the c-axis on the top plane. The STS results indicated superconducting nature on the swells and semiconducting nature on the depressions. [References: 17]
机译:(110)取向的激光烧蚀YBa2Cu3Oy薄膜的生长表面已通过扫描隧道显微镜和光谱学首次在室温和4.2 K下进行了研究。我们发现了沿c轴的半宏观表面结构,由(110)顶平面和(100)/(010)侧平面组成。在(110)顶面上以4.2 K观察到正交各向异性的原子晶格图像,该图像分别对应于CuO2双层和CuO链层的Cu原子排列。此外,还观察到宽膨胀和凹陷结构为垂直于顶部平面上的c轴。 STS结果表明,膨胀具有超导电性,而凹陷具有半导电性。 [参考:17]

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