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

被引：12

作者：

Qian, Kai ^{[1
,3
]}

Apigo, David J. ^{[1
]}

Padavic, Karmela ^{[2
,4
]}

Ahn, Keun Hyuk ^{[1
]}

Vishveshwara, Smitha ^{[2
]}

Prodan, Camelia ^{[1
]}

机构：

[1] New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA

[2] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[3] Univ Calif San Diego, Dept Mech Aerosp & Engn, La Jolla, CA 92093 USA

[4] Bard High Sch Early Coll, Dept Sci, New York, NY 10002 USA

来源：

PHYSICAL REVIEW RESEARCH | 2023年 / 5卷 / 01期

基金：

美国国家科学基金会;

关键词：

NANOWIRE; SUPERCONDUCTOR; SIGNATURE; SOLITONS; FERMIONS;

D O I：

10.1103/PhysRevResearch.5.L012012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：7

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