2019/06/27 by Jie Liu, Yijia Wu, Qing‐Feng Sun +3
Engineering · Physics and Astronomy · #Computer science #Condensed matter physics #Electrical engineering #Engineering #Flux (metallurgy) #Josephson effect #Josephson energy #Materials science #Physics #Physics of Superconductivity and Magnetism #Pi Josephson junction #Planar #Quantum and electron transport phenomena #Superconducting tunnel junction #Superconductivity #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.100.235131
published as Phys. Rev. B 100, 235131 (2019) · 5 pages, 4 figures
arxiv created 2019/06/27 · openalex publication_date 2019/12/20 · arxiv updated 2019/12/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A planar Josephson junction with a normal metal attached on its top surface will form a hollow nanowire structure due to its three-dimensional nature. In such hollow nanowire structure, a magnetic flux induced by a small magnetic field (about 0.01T) will tune the system into topologically nontrivial phase. Therefore two Majorana zero modes will form at the ends of the nanowire. Through tuning the chemical potential of the normal metal, the topologically nontrivial phase can be obtained for almost all the energy within the band. Furthermore, the system can be conveniently tuned between the topologically trivial and nontrivial phases via the phase difference between the two superconductor bulks. Such device, manipulable through flux, can be conveniently fabricated into desired 2D networks. Finally, we also propose a cross-shaped junction realizing the braiding of Majorana zero modes through manipulating the phase differences.