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   https://doi.org/10.1515/nanoph-2024-0672  

   Kwon, Soyeong; Yun, Tae Keun; Ma, Peiwen J; Nam, SungWoo (January 2025, Nanophotonics)

   Abstract In this work, we explore how the optical properties of isotropic materials can be modulated by adjacent anisotropic materials, providing new insights into anisotropic light-matter interactions in van der Waals heterostructures. Using a WS₂/ReS₂heterostructure, we systematically investigated the excitation angle-dependent photoluminescence (PL), differential reflectance, time-resolved PL, and power-dependent PL anisotropy of WS₂. Our findings reveal that the anisotropic optical response of WS₂, influenced by the crystallographically low symmetry and unique dielectric environment of ReS₂, significantly impacts both the optical and temporal behavior of WS₂. We observed that the emission anisotropy increases with optical power density, highlighting that anisotropic localization of photo-generated carriers and subsequent charge transfer dynamics are key contributors to the polarization-sensitive optical response. These findings provide a framework for leveraging optical density-sensitive anisotropy mirroring to design advanced anisotropic optoelectronic and photonic devices. 

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2. In-plane plasmon coupling in topological insulator Bi ₂ Se ₃ thin films

   https://doi.org/10.1063/5.0071895  

   Nasir, Saadia; Wang, Zhengtianye; Mambakkam, Sivakumar V.; Law, Stephanie (November 2021, Applied Physics Letters)
3. Atomically Thin CrCl ₃ : An In-Plane Layered Antiferromagnetic Insulator

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   Cai, Xinghan; Song, Tiancheng; Wilson, Nathan P.; Clark, Genevieve; He, Minhao; Zhang, Xiaoou; Taniguchi, Takashi; Watanabe, Kenji; Yao, Wang; Xiao, Di; et al (April 2019, Nano Letters)
4. In-plane/out-of-plane disorder influence on the magnetic anisotropy of Fe _{1− y} Mn _y Pt-L1 ₀ bulk alloy

   https://doi.org/10.1063/1.4944534  

   Cuadrado, R.; Liu, Kai; Klemmer, Timothy J.; Chantrell, R. W. (March 2016, Applied Physics Letters)
5. Perpendicular and in-plane hole asymmetry in a strained NiFe ₂ O ₄ film

   https://doi.org/10.1088/1361-648X/abf0c5  

   Knut, R; Malik, R S; Kons, C; Shoup, J E; Radu, F; Luo, C; Kvashnin, Y O; Gupta, A; Karis, O; Arena, D A (May 2021, Journal of Physics: Condensed Matter)

   Abstract Strained materials can exhibit drastically modified physical properties in comparison to their fully relaxed analogues. We report on the x-ray absorption spectra (XAS) and magnetic circular dichroism (XMCD) of a strained NiFe 2 O 4 inverse spinel film grown on a symmetry matched single crystal MgGa 2 O 4 substrate. The Ni XAS spectra exhibit a sizable difference in the white line intensity for measurements with the x-ray electric field parallel to the film plane (normal incidence) vs when the electric field is at an angle (off-normal). A considerable difference is also observed in the Fe L 2,3 XMCD spectrum. Modeling of the XAS and XMCD spectra indicate that the modified energy ordering of the cation 3 d states in the strained film leads to a preferential filling of 3 d states with out-of-plane character. In addition, the results point to the utility of x-ray spectroscopy in identifying orbital populations even with elliptically polarized x-rays. 

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