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首页> 外文期刊>Japanese journal of applied physics >Supercell Structure on Continuous Growth of Bi_2Sr_2Ca_1Cu_2O_x Film
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Supercell Structure on Continuous Growth of Bi_2Sr_2Ca_1Cu_2O_x Film

机译：Bi_2Sr_2Ca_1Cu_2O_x薄膜连续生长的超晶格结构

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摘要

The strain induced by a multilayered structure affects how strongly unit cells are distorted to form structural modulations (supercell; SC) in bismuth cuprate superconducting films. On the contrary to the multilayered structure, the strain will be released in a single thick film. To investigate the effect of strain on the SC structure, a relatively thick Bi_2Sr_2Ca_1Cu_2O_x (Bi-2212) film was prepared on a MgO(001) substrate, and the SC structure in the thick film was compared with those in single thin film and the multilayered films. With the increase in film thickness from a few layers to a few tens of hundred layers, another phase of Bi-2212 became a dominant structure, which rotated around the surface normal with an angle of 32°. The distortion became weak in the thick film, resulting in the weak satellite generated by the SC structure.
机译：多层结构引起的应变影响在铋酸铜超导薄膜中晶胞畸变的程度，以形成结构调制（supercell； SC）。与多层结构相反，应变将在单个厚膜中释放。为了研究应变对SC结构的影响，在MgO（001）衬底上制备了相对较厚的Bi_2Sr_2Ca_1Cu_2O_x（Bi-2212）膜，并将厚膜中的SC结构与单层薄膜和多层膜中的SC结构进行了比较。电影。随着膜厚度从几层增加到几百层，Bi-2212的另一相成为主要结构，它围绕表面法线旋转了32°角。厚膜中的变形变得微弱，导致SC结构产生的卫星较弱。

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