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April 15, 2026

Observation of anomalous exciton-polariton bands in (PEA)2PbI4 perovskite based microcavity at room temperature

Key Points

The aim is to investigate anomalous exciton-polariton bands in (PEA)2PbI4 perovskite microcavities.
Utilized a non-Hermitian coupled oscillator model for simulation
Conducted experimental observations at room temperature
Compared simulated band structure to experimental data
Observed anomalous energy bands with negative mass
Simulation results closely aligned with experimental findings
Indicated potential for studying polariton wave dynamics at room temperature

Abstract

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.

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Authors

Chunzi Xing

Xiaokun Zhai

Peilin Wang

Journals

Applied Physics Letters

Actions

Institutions

Tianjin University

Beijing Institute of Petrochemical Technology

Tianjin University of Finance and Economics

References and Citations

Connected Papers

Building similarity graph...

Analyzing shared references across papers

Observation of anomalous exciton-polariton bands in (PEA)2PbI4 perovskite based microcavity at room temperature

Key Points

Abstract

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Connected Papers

Discussion

Authors

Journals

Actions

Institutions

References and Citations

Citation Network

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