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- W4384652187 abstract "The ability to selectively excite light with fixed handedness is crucial for circularly polarized light emission. It is commonly believed that the luminescent material chirality determines the emitted light handedness, regardless of the light emitting direction. In this work, we propose an anomalous circular polarized light emission (ACPLE) whose handedness actually relies on the emission direction and current direction in electroluminescence. In a solid semiconductor, the ACPLE originates in the band structure topology characterized by the optical Berry curvature dipole. ACPLE exists in inversion-symmetry breaking materials including chiral materials. We exemplify the ACPLE by estimating the high circular polarization ratio in monolayer WS$_2$. In addition, the ACPLE can be further generalized to magnetic semiconductors in which the optical Berry curvature plays a leading role instead. Our finding reveals intriguing consequences of band topology in light emission and promises optoelectric applications." @default.
- W4384652187 created "2023-07-19" @default.
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- W4384652187 date "2023-07-13" @default.
- W4384652187 modified "2023-10-18" @default.
- W4384652187 title "Anomalous Circularly Polarized Light Emission induced by the Optical Berry Curvature Dipole" @default.
- W4384652187 doi "https://doi.org/10.48550/arxiv.2307.07556" @default.
- W4384652187 hasPublicationYear "2023" @default.
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