Revealing Temperature-Dependent Noise Sources in Aluminum Oxide Josephson Junctions Using Topological Analysis
文献类型：期刊论文
| 作者 | Han, Chuanbing2; Sun, Huihui2,3; Hou, Chaofeng1; Wang, Shuya2; Xu, Jinlong2; Shan, Zheng2,3 |
| 刊名 | Journal of Physical Chemistry C
 |
| 出版日期 | 2022-08-25 |
| 卷号 | 126期号:33页码:14297-14304 |
| ISSN号 | 19327447 |
| 关键词 | Alumina - Atoms - Entropy - Molecular dynamics - Surface roughness - Thermooxidation - Topology |
| DOI | 10.1021/acs.jpcc.2c04056 |
| 英文摘要 | Despite many improvements in the quality and reliability of Josephson junctions, the understanding of their noise sources, particularly the effect of oxidation parameters on the atomic arrangement of the interface and barrier layers, remains elusive. Here, we apply a Voronoi tessellation, a geometrically structural and topological analysis, to the amorphous barriers in aluminum oxide junctions. To enable this analysis, we perform million-atom molecular dynamics simulations to develop oxidation models at different temperatures. We find that the temperature introduces noise by changing the atomic compactness of oxides in the junctions. High-temperature oxidation aggravates the structural disorder and surface roughness of the barrier. This work will pave the way for illustrating the microscopic noise origin of amorphous oxides, which can transform our fundamental understanding of noncrystalline materials and qubit decoherence mechanisms. 漏 2022 American Chemical Society. All rights reserved. |
| 学科主题 | Aluminum Oxide |
| 出版者 | American Chemical Society |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61183]  |
| 作者单位 | 1.Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 2.State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou; 450001, China 3.Songshan Laboratory, Zhengzhou; 450040, China |
| 推荐引用方式 GB/T 7714 | Han, Chuanbing,Sun, Huihui,Hou, Chaofeng,et al. Revealing Temperature-Dependent Noise Sources in Aluminum Oxide Josephson Junctions Using Topological Analysis[J]. Journal of Physical Chemistry C,2022,126(33):14297-14304. |
| APA | Han, Chuanbing,Sun, Huihui,Hou, Chaofeng,Wang, Shuya,Xu, Jinlong,&Shan, Zheng.(2022).Revealing Temperature-Dependent Noise Sources in Aluminum Oxide Josephson Junctions Using Topological Analysis.Journal of Physical Chemistry C,126(33),14297-14304. |
| MLA | Han, Chuanbing,et al."Revealing Temperature-Dependent Noise Sources in Aluminum Oxide Josephson Junctions Using Topological Analysis".Journal of Physical Chemistry C 126.33(2022):14297-14304. |
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来源：过程工程研究所
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