研究目的
Investigating the photonic spin Hall effect (PSHE) on a monolayer of black phosphorus (BP) due to its in-plane anisotropic property and exploring its potential applications in optoelectronic devices.
研究成果
The study systematically investigates the novel PSHE in monolayer BP, highlighting the asymmetric spin splitting due to the in-plane anisotropy. The findings suggest potential applications in electrically tunable and angle-resolved optoelectronic devices in the Terahertz region, with a proposed barcode-encryption scheme based on the tunable asymmetric spin splitting.
研究不足
The study is theoretical, and the experimental observation of the asymmetric spin splitting in monolayer BP is proposed but not yet demonstrated. The practical implementation of the proposed barcode-encryption scheme requires further experimental validation.
1：Experimental Design and Method Selection:
The study involves theoretical modeling and numerical simulations to investigate the PSHE on a monolayer BP. The photonic property of BP is described by a surface conductivity under the Drude model.
2：Sample Selection and Data Sources:
A monochromatic light beam is considered to illuminate onto a monolayer BP sitting on a silicon substrate.
3：List of Experimental Equipment and Materials:
The study is theoretical, focusing on the properties of BP and its interaction with light.
4：Experimental Procedures and Operational Workflow:
The study involves calculating the centroid displacements of the reflected beam's RCP and LCP components based on the Fresnel reflection coefficients of the BP-Si substrate structure.
5：Data Analysis Methods:
The centroid displacements are analyzed to understand the asymmetric spin splitting and its modulation by the carrier density and the angle between the incident plane and the armchair crystalline direction of BP.
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