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Emerging Majorana Zero Modes in Topologically Trivial Dirac Nodal Loop Semimetal Superconductors with Even Parity

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Abstract

We reveal that the topologically nontrivial Dirac nodal loop semimetal will become topologically trivial in the superconducting state with the even parity. Interestingly, the Majorana zero modes can still be realized in this topologically trivial state. In the presence of a vortex line, a pair of Majorana zero modes emerge in the vortex core. The appearance/disappearance of the Majorana zero modes can be characterized by the \(Z_{2}\) topological invariant. Moreover, a vortex phase transition occurs upon changing the chemical potential.

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Acknowledgements

This work was supported by the NSFC (Grant No. 12074130), the Natural Science Foundation of Guangdong Province (Grant No. 2021A1515012340), and the Science and Technology Program of Guangzhou (Grant No. 202102080434).

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Authors and Affiliations

  1. Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, 510006, Guangzhou, China

    Xiaoming Wang & Tao Zhou

  2. Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, 510006, Guangzhou, China

    Tao Zhou

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  1. Xiaoming Wang
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  2. Tao Zhou
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Correspondence to Tao Zhou.

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Wang, X., Zhou, T. Emerging Majorana Zero Modes in Topologically Trivial Dirac Nodal Loop Semimetal Superconductors with Even Parity. J Supercond Nov Magn 35, 1807–1812 (2022). https://doi.org/10.1007/s10948-022-06254-0

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  • DOI: https://doi.org/10.1007/s10948-022-06254-0

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