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Majorana zero modes induced by skyrmion lattice |
| Dong-Yang Jing(靖东洋)1,2, Huan-Yu Wang(王寰宇)1,2, Wen-Xiang Guo(郭文祥)4,5, and Wu-Ming Liu(刘伍明)1,2,3,† |
1 Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China;
4 TIPC-LNE Joint Laboratory on Cryogenic Metrology Science and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
5 CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract One-dimensional s-wave superconductor with spin-orbit coupling is a platform for the realization of Majorana zero modes. The spin-exchange with the magnetic skyrmion lattice can induce spin-orbit coupling in a s-wave superconductor system and the effects are different from the constant spin-orbit coupling. The strength of the effective spin-orbit coupling as well as the rich topoloigcal phase diagram are directly connected to the radius of the skyrmion lattice R. We obtain the rich topological phase diagram of this system with different skyrmion lattice radii by numerically evaluating the spectrum of the system under the periodic boundary condition, and we also find the Majorana zero modes under the open boundary condition to verify the bulk-edge correspondence.
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Received: 21 March 2022
Revised: 01 May 2022
Accepted manuscript online: 12 May 2022
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PACS:
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74.81.-g
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(Inhomogeneous superconductors and superconducting systems, including electronic inhomogeneities)
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03.65.Vf
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(Phases: geometric; dynamic or topological)
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31.15.aj
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(Relativistic corrections, spin-orbit effects, fine structure; hyperfine structure)
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| Fund: Project supported by the National Key R&D Program of China (Grant Nos. 2021YFA1400900, 2021YFA0718300, and 2021YFA1400243) and the National Natural Science Foundation of China (Grant No. 61835013). |
Corresponding Authors:
Wu-Ming Liu
E-mail: wliu@iphy.ac.cn
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Cite this article:
Dong-Yang Jing(靖东洋), Huan-Yu Wang(王寰宇), Wen-Xiang Guo(郭文祥), and Wu-Ming Liu(刘伍明) Majorana zero modes induced by skyrmion lattice 2023 Chin. Phys. B 32 017401
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