Quasiparticle Trapping at Vortices Producing Josephson Supercurrent Enhancement

Sato, Yosuke1,2; Ueda, Kento1; Takeshige, Yuusuke1; Kamata, Hiroshi3; Li, Kan4,5; Samuelson, Lars6,7; Xu, H. Q.4,5,6,8; Matsuo, Sadashige2,9; Tarucha, Seigo2,10

2022-05-19

10.1103/PhysRevLett.128.207001

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

The Josephson junction of a strong spin-orbit material under a magnetic field is a promising Majorana fermion candidate. Supercurrent enhancement by a magnetic field has been observed in the InAs nanowire Josephson junctions and assigned to a topological transition. In this work we observe a similar phenomenon but discuss the nontopological origin by considering the trapping of quasiparticles by vortices that penetrate the superconductor under a finite magnetic field. This assignment is supported by the observed hysteresis of the switching current when sweeping up and down the magnetic field. Our experiment shows the importance of quasiparticles in superconducting devices with a magnetic field, which can provide important insights for the design of qubits using superconductors.

SCI ; EI

英语

其他

JST PRESTO[JP19H05610] ; Advanced Technology Institute Research Grants[JPMJPR18L8] ; Ministry of Science and Technology of China (MOST) through the National Key Research and Development Program of China["2016YFA0300601","2017YFA0303304"] ; [92165208] ; [11874071] ; [91221202] ; [91421303]

Physics

Physics, Multidisciplinary

WOS:000806737200001

AMER PHYSICAL SOC

20222412217367

III-V semiconductors ; Indium arsenide ; Josephson junction devices ; Quantum optics ; Superconducting films ; Vortex flow

Fluid Flow, General:631.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Superconducting Materials:708.3 ; Semiconducting Materials:712.1 ; Light/Optics:741.1 ; Inorganic Compounds:804.2 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Univ Tokyo, Dept Appl Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
2.RIKEN, Ctr Emergent Matter Sci, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
3.Univ Paris Diderot, Sorbonne Univ, CNRS, Ecole Normale Super,PSL Res Univ,ENS,Lab Phys, Sorbonne Paris Cite,24 Rue Lhomond, F-75231 Paris 05, France
4.Peking Univ, Beijing Key Lab Quantum Devices, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China
5.Peking Univ, Sch Elect, Beijing 100871, Peoples R China
6.Lund Univ, Div Solid State Phys & NanoLund, Box 118, SE-22100 Lund, Sweden
7.Southern Univ Sci & Technol, Dept Elect & Elect Engn, 1088 Xueyuan Blvd, Shenzhen 518055, Guangdong, Peoples R China
8.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
9.PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan
10.RIKEN, RIKEN Ctr Quantum Comp, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

Sato, Yosuke,Ueda, Kento,Takeshige, Yuusuke,et al. Quasiparticle Trapping at Vortices Producing Josephson Supercurrent Enhancement[J]. PHYSICAL REVIEW LETTERS,2022,128(20).

Sato, Yosuke.,Ueda, Kento.,Takeshige, Yuusuke.,Kamata, Hiroshi.,Li, Kan.,...&Tarucha, Seigo.(2022).Quasiparticle Trapping at Vortices Producing Josephson Supercurrent Enhancement.PHYSICAL REVIEW LETTERS,128(20).

Sato, Yosuke,et al."Quasiparticle Trapping at Vortices Producing Josephson Supercurrent Enhancement".PHYSICAL REVIEW LETTERS 128.20(2022).