Asymmetric edge supercurrents in MoTe2 Josephson junctions

被引：0

作者：

Chen, Pingbo ^{[1
,2
]}

Wang, Jinhua ^{[2
]}

Wang, Gongqi ^{[2
]}

Ye, Bicong ^{[2
,3
]}

Zhou, Liang ^{[2
]}

Wang, Le ^{[4
]}

Wang, Jiannong ^{[3
]}

Zhang, Wenqing ^{[5
,6
]}

Chen, Weiqiang ^{[2
,6
]}

Mei, Jiawei ^{[2
,6
]}

He, Hongtao ^{[2
,6
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Phys, Clear Water Bay, Hong Kong 999077, Peoples R China

[4] Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China

[5] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

[6] Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China

来源：

NANOSCALE ADVANCES | 2024年 / 6卷 / 02期

关键词：

Compendex;

D O I：

10.1039/d3na00884c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To investigate the higher order topology in MoTe2, the supercurrent interference phenomena in Nb/MoTe2/Nb planar Josephson junctions have been systematically studied. By analyzing the obtained interference pattern of the critical supercurrents and performing a comparative study of the edge-touched and untouched junctions, it's found that the supercurrent is dominated by the edges, rather than the bulk or surfaces of MoTe2. An asymmetric Josephson effect with a field-tunable sign is also observed, indicating the nontrivial origin of the edge states. These results not only provide initial evidence for the hinge states in the higher order topological insulator MoTe2, but also demonstrate the potential applications of MoTe2-based Josephson junctions in rectifying the supercurrent.

引用

页码：690 / 696

页数：7

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