Observation of Majorana-like bound states in metamaterial-based Kitaev chain analogs

Autor: Kai Qian, David J. Apigo, Karmela Padavić, Keun Hyuk Ahn, Smitha Vishveshwara, Camelia Prodan
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Physical Review Research, Vol 5, Iss 1, p L012012 (2023)
Druh dokumentu: article
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.5.L012012
Popis: We experimentally demonstrate that Majorana-like bound states (MLBSs) can occur in quasi-one-dimensional metamaterials, analogous to Majorana zero modes (MZMs) in the Kitaev chain in terms of mode spectrum and mode wave functions. In a mechanical spinner ladder system, we observe a topological phase transition and spectral-gap-protected edge MLBSs. We characterize phase controllable hybridization and the decaying and oscillatory nature of these MLBS pairs. It is shown that the hybridization can be tuned to yield the analog of parity switching in MZMs. We find strong agreements with theory.
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