Dissipative Floquet Majorana Modes in Proximity-Induced Topological Superconductors

2020/04/30 by Zhesen Yang, Qinghong Yang, Jiangping Hu +1 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Dissipative system #Floquet theory #MAJORANA #Materials science #Nanotechnology #Physics #Proximity effect (electron beam lithography) #Quantum many-body systems #Quantum mechanics #Superconductivity #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.126.086801

published as Phys. Rev. Lett. 126, 086801 (2021) · 5 pages, 3 figures, with Supplementary information

openalex publication_date 2021/02/25 · arxiv created 2021/03/06 · arxiv updated 2021/03/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We study a realistic Floquet topological superconductor, a periodically driven nanowire proximitized to an equilibrium s-wave superconductor. Because of the strong energy and density fluctuations caused by the superconducting proximity effect, the Floquet Majorana wire becomes dissipative. We show that the Floquet band structure is still preserved in this dissipative system. In particular, we find that the Floquet Majorana zero and π modes can no longer be simply described by the Floquet topological band theory. We also propose an effective model to simplify the calculation of the lifetime of these Floquet Majoranas and find that the lifetime can be engineered by the external driving field.

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