Observation of anomalous exciton-polariton bands in (PEA)2PbI4 perovskite based microcavity at room temperature
Recently, anomalous energy bands with negative mass attract intensive attention where non-Hermiticity plays an important role. In this work, we observe anomalous exciton-polariton bands in (PEA)2PbI4 perovskite based microcavity at room temperature. We simulate the anomalous band structure using a non-Hermitian coupled oscillator model, which agrees with experiments very well. Our results offer to study non-Hermitian polariton wave dynamics at room temperature.
Authors
- Xianxiong He
- Peilin Wang
- Yuan Ren (ORCID: https://orcid.org/0000-0003-1150-6608)
- Xiaokun Zhai (ORCID: https://orcid.org/0000-0002-3460-6399)
- Haitao Dai (ORCID: https://orcid.org/0000-0001-5424-6047)
- Yuan Li (ORCID: https://orcid.org/0000-0002-3897-9942)
- Jiaxiang Mu
- Dongxue Wang
- Liefeng Feng (ORCID: https://orcid.org/0000-0003-4995-2355)
- Tingge Gao
- Xinmiao Yang
- Chunzi Xing
- Yong Zhang
Institutions
- Beijing Institute of Petrochemical Technology (CN)
- Tianjin University (CN)
- Tianjin University of Finance and Economics (CN)
- Health Awareness (United States) (US)
- Space Engineering University (CN)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2026-04-13
- DOI
- https://doi.org/10.1063/5.0323218
- Primary Topic
- Strong Light-Matter Interactions
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation