Reducing Electronic Transport Dimension to Topological Hinge States by Increasing Geometry Size of Dirac Semimetal Josephson Junctions

Li, Cai-Zhen1,2,3,4; Wang, An-Qi3,4,5; Li, Chuan6; Zheng, Wen-Zhuang3,4; Brinkman, Alexander6; Yu, Da-Peng1,2; Liao, Zhi-Min3,4,7,8

2020-04-13

10.1103/PhysRevLett.124.156601

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

The notion of topological phases has been extended to higher-order and has been generalized to different dimensions. As a paradigm, Cd3As2 is predicted to be a higher-order topological semimetal, possessing three-dimensional bulk Dirac fermions, two-dimensional Fermi arcs, and one-dimensional hinge states. These topological states have different characteristic length scales in electronic transport, allowing one to distinguish their properties when changing sample size. Here, we report an anomalous dimensional reduction of supercurrent transport by increasing the size of Dirac semimetal Cd 3 As 2-based Josephson junctions. An evolution of the supercurrent quantum interferences from a standard Fraunhofer pattern to a superconducting quantum interference device (SQUID)-like one is observed when the junction channel length is increased. The SQUID-like interference pattern indicates the supercurrent flowing through the 1D hinges. The identification of 1D hinge states should be valuable for deeper understanding of the highe-rorder topological phase in a 3D Dirac semimetal.

SCI ; EI

英语

第一

National Natural Science Foundation of China[91964201] ; National Natural Science Foundation of China[61825401] ; National Natural Science Foundation of China[11774004]

Physics

Physics, Multidisciplinary

WOS:000525329900010

AMER PHYSICAL SOC

20202008666873

Cadmium compounds ; Molluscs ; Josephson junction devices ; Topology

Marine Science and Oceanography:471 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
4.Peking Univ, Frontiers Sci Ctr Nanooptoelect, Sch Phys, Beijing 100871, Peoples R China
5.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
6.Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands
7.Peking Univ, Beijing Key Lab Quantum Devices, Beijing 100871, Peoples R China
8.Peking Univ, Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

Li, Cai-Zhen,Wang, An-Qi,Li, Chuan,et al. Reducing Electronic Transport Dimension to Topological Hinge States by Increasing Geometry Size of Dirac Semimetal Josephson Junctions[J]. PHYSICAL REVIEW LETTERS,2020,124(15).

Li, Cai-Zhen.,Wang, An-Qi.,Li, Chuan.,Zheng, Wen-Zhuang.,Brinkman, Alexander.,...&Liao, Zhi-Min.(2020).Reducing Electronic Transport Dimension to Topological Hinge States by Increasing Geometry Size of Dirac Semimetal Josephson Junctions.PHYSICAL REVIEW LETTERS,124(15).

Li, Cai-Zhen,et al."Reducing Electronic Transport Dimension to Topological Hinge States by Increasing Geometry Size of Dirac Semimetal Josephson Junctions".PHYSICAL REVIEW LETTERS 124.15(2020).