超电流
约瑟夫森效应
凝聚态物理
磁场
物理
栅极电压
皮约瑟夫森结
相(物质)
传输(电信)
电压
超导电性
晶体管
电气工程
量子力学
工程类
作者
Vukan Levajac,Hristo Barakov,Grzegorz P. Mazur,Nick van Loo,Leo P. Kouwenhoven,Yuli V. Nazarov,Ji‐Yin Wang
出处
期刊:Cornell University - arXiv
日期:2023-01-01
标识
DOI:10.48550/arxiv.2310.03296
摘要
We study the current-phase relation (CPR) of an InSb-Al nanowire Josephson junction in parallel magnetic fields up to $700$\,mT. At high magnetic fields and in narrow voltage intervals of a gate under the junction, the CPR exhibits $\pi$-shifts. The supercurrent declines within these gate intervals and shows asymmetric gate voltage dependence above and below them. We detect these features sometimes also at zero magnetic field. The observed CPR properties are reproduced by a theoretical model of supercurrent transport via interference between direct transmission and a resonant localized state.
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