2D materials, particularly 2D semiconductors, and layered antiferromagnetic (AFM) compounds, exhibit rich light‐matter coupling phenomena in low‐dimensional systems. In this work, the occurrence of interlayer exciton–magnon coupling (EMC) is observed in Néel‐type AFM of MnPX3 (X = S or Se) and monolayer (1L) WS2 heterostructures. The energy of neutral exciton in 1L WS2 can be tuned by the adjacent AFM order, resulting in an additional energy shift of 10–14 meV. Furthermore, by filtering the photoluminescence spectrum with graphene and conducting magnetic measurements, the correlation is elucidated between the interlayer EMC and AFM transition process. In MnPS3, this coupling behavior exhibits sensitivity to the changes of magnetic structures, manifesting with a correlated length ξ of 8.34 Å at temperatures higher than Néel temperature (TN). The decoupling process in WS2/MnPS3 heterostructure below 50 K is originated from a weak out‐of‐plane ferromagnetic order, confirming the presence of an XY‐type magnetic phase transition in MnPS3 at sub‐TN temperature. This study provides a fundamental understanding of EMC and its potential applications in the integration of optical and magnetic devices.

中文翻译：

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石墨烯/WS2/Néel型锰磷三硫属化物异质结构中激子和磁振子的层间相互作用


二维材料，特别是二维半导体和层状反铁磁（AFM）化合物，在低维系统中表现出丰富的光物质耦合现象。在这项工作中，在 MnPX3（X = S 或 Se）和单层（1L）WS2 异质结构的 Néel 型 AFM 中观察到层间激子-磁振子耦合（EMC）的发生。 1L WS2 中中性激子的能量可以通过相邻的 AFM 阶数进行调节，从而产生 10-14 meV 的额外能量偏移。此外，通过用石墨烯过滤光致发光光谱并进行磁性测量，阐明了层间 EMC 和 AFM 转变过程之间的相关性。在 MnPS3 中，这种耦合行为对磁性结构的变化表现出敏感性，在高于尼尔温度 (TN) 的温度下，相关长度 xi 为 8.34 Å。 WS2/MnPS3 异质结构在 50 K 以下的解耦过程源于弱面外铁磁序，证实了 MnPS3 在亚 TN 温度下存在 XY 型磁相变。这项研究提供了对 EMC 及其在光磁器件集成中的潜在应用的基本了解。