Josephson diode effect in topological superconductors

被引：1

作者：

Liu, Zhaochen ^{[1
,2
,3
]}

Huang, Linghao ^{[1
,2
,3
]}

Wang, Jing ^{[1
,2
,3
,4
,5
]}

机构：

[1] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[3] Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China

[4] Fudan Univ, Inst Nanoelect Devices & Quantum Comp, Shanghai 200433, Peoples R China

[5] Hefei Natl Lab, Hefei 230088, Peoples R China

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 01期

关键词：

SNS JUNCTIONS;

D O I：

10.1103/PhysRevB.110.014519

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the Josephson diode effect (JDE) in topological Josephson junctions. By both analytic and numerical calculations, we find that while a Josephson junction in the topological phase may exhibit higher diode efficiency compared to that in the trivial phase, this behavior is not universal. The presence of Majorana bound states is not a sufficient condition for a large diode effect. Furthermore, the diode efficiency undergoes substantial changes only in specific regions along the topological phase transition boundary, and a significant diode effect does coincide with the topological phases. Thereby our paper suggests the utilization of topological superconductivity for enhanced JDE, and also the Josephson diode effect may serve as an indicator for topological superconductor phase. These results suggest a nuanced relationship between the topological aspects of Josephson junctions and Josephson diode effect.

引用

页数：7

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