Supercurrent in the Presence of Direct Transmission and a Resonant Localized State

被引：2

作者：

Levajac, Vukan ^{[1
,2
]}

Barakov, Hristo ^{[3
]}

Mazur, Grzegorz P. ^{[1
,2
]}

van Loo, Nick ^{[1
,2
]}

Kouwenhoven, Leo P. ^{[1
,2
]}

Nazarov, Yuli V. ^{[3
]}

Wang, Ji-Yin ^{[1
,2
,4
]}

机构：

[1] Delft Univ Technol, QuTech, NL-2600 GA Delft, Netherlands

[2] Delft Univ Technol, Kavli Inst Nanosci, NL-2600 GA Delft, Netherlands

[3] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands

[4] Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 17期

基金：

欧洲研究理事会;

关键词：

TOPOLOGICAL SUPERCONDUCTIVITY; COHERENT MANIPULATION; JOSEPHSON DIODE;

D O I：

10.1103/PhysRevLett.132.176304

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 7V 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.

引用

页数：6