Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Geometric Scaling of the Current–Phase Relation of Niobium Nanobridge Junctions
ACS Nano ( IF 15.8 ) Pub Date : 2023-08-13 , DOI: 10.1021/acsnano.3c01301 Yue Wang 1, 2 , Lei Chen 1, 2 , Yinping Pan 1 , Denghui Zhang 1, 2 , Shujie Yu 1, 2 , Guangting Wu 1, 2 , Xiaoyu Liu 1 , Ling Wu 1 , Weifeng Shi 1 , Guofeng Zhang 1 , Lu Zhang 1, 2 , Wei Peng 1, 2 , Jie Ren 1, 2 , Zhen Wang 1, 2, 3
ACS Nano ( IF 15.8 ) Pub Date : 2023-08-13 , DOI: 10.1021/acsnano.3c01301 Yue Wang 1, 2 , Lei Chen 1, 2 , Yinping Pan 1 , Denghui Zhang 1, 2 , Shujie Yu 1, 2 , Guangting Wu 1, 2 , Xiaoyu Liu 1 , Ling Wu 1 , Weifeng Shi 1 , Guofeng Zhang 1 , Lu Zhang 1, 2 , Wei Peng 1, 2 , Jie Ren 1, 2 , Zhen Wang 1, 2, 3
Affiliation
|
The nanobridge junction (NBJ) is a type of Josephson junction that is advantageous for the miniaturization of superconducting circuits. However, the current–phase relation (CPR) of the NBJ usually deviates from a sinusoidal function, which has been explained by a simplified model with correlation only to its effective length. Here, we investigated both measured and calculated CPRs of niobium NBJs of a cuboidal shape with a three-dimensional bank structure. From a sine-wave to a sawtooth-like form, we showed that deviated CPRs of NBJs can be described quantitatively by its skewness Δθ. Furthermore, the measured dependence of Δθ on the critical current I0 from 108 NBJs turned out to be consistent with the calculated dependence derived from the change in geometric dimensions. This suggested that the CPRs of NBJs can be tuned by their geometric dimensions. In addition, the calculated scaling behavior of Δθ versus I0 in 3D space was provided for the future design of superconducting circuits of a high integration level by using niobium NBJs.
中文翻译：
铌纳米桥结电流-相位关系的几何缩放
纳米桥结（NBJ）是约瑟夫森结的一种，有利于超导电路的小型化。然而，NBJ 的电流相位关系 (CPR) 通常偏离正弦函数，这已通过仅与其有效长度相关的简化模型进行了解释。在这里，我们研究了具有三维银行结构的立方体铌 NBJ 的测量和计算 CPR。从正弦波到锯齿波形式，我们发现 NBJ 的偏差 CPR 可以通过其偏度 Δθ 来定量描述。此外，从 108 个 NBJ 测得的 Δθ 对临界电流I 0的依赖性与根据几何尺寸变化计算出的依赖性一致。这表明 NBJ 的 CPR 可以通过其几何尺寸来调节。此外，计算出的3D空间中Δθ与I 0 的标度行为为未来使用铌NBJ设计高集成度的超导电路提供了依据。
更新日期：2023-08-13
中文翻译：
铌纳米桥结电流-相位关系的几何缩放
纳米桥结（NBJ）是约瑟夫森结的一种，有利于超导电路的小型化。然而，NBJ 的电流相位关系 (CPR) 通常偏离正弦函数，这已通过仅与其有效长度相关的简化模型进行了解释。在这里，我们研究了具有三维银行结构的立方体铌 NBJ 的测量和计算 CPR。从正弦波到锯齿波形式，我们发现 NBJ 的偏差 CPR 可以通过其偏度 Δθ 来定量描述。此外，从 108 个 NBJ 测得的 Δθ 对临界电流I 0的依赖性与根据几何尺寸变化计算出的依赖性一致。这表明 NBJ 的 CPR 可以通过其几何尺寸来调节。此外，计算出的3D空间中Δθ与I 0 的标度行为为未来使用铌NBJ设计高集成度的超导电路提供了依据。
京公网安备 11010802027423号