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   Vazirisereshk, Mohammad R.; Hasz, Kathryn; Carpick, Robert W.; Martini, Ashlie (August 2020, The Journal of Physical Chemistry Letters)

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2. Unusual perpendicular anisotropy in Co ₂ TiSi films

   https://doi.org/10.1088/1361-6463/aae80f  

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3. Orientation-Controlled Anisotropy in Single Crystals of Quasi-1D BaTiS ₃

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   Zhao, Boyang; Hoque, Md Shafkat; Jung, Gwan Yeong; Mei, Hongyan; Singh, Shantanu; Ren, Guodong; Milich, Milena; Zhao, Qinai; Wang, Nan; Chen, Huandong; et al (June 2022, Chemistry of Materials)

   Low-dimensional materials with chain-like (one-dimensional) or layered (two-dimensional) structures are of significant interest due to their anisotropic electrical, optical, and thermal properties. One material with a chain-like structure, BaTiS3 (BTS), was recently shown to possess giant in-plane optical anisotropy and glass-like thermal conductivity. To understand the origin of these effects, it is necessary to fully characterize the optical, thermal, and electronic anisotropy of BTS. To this end, BTS crystals with different orientations (a- and c-axis orientations) were grown by chemical vapor transport. X-ray absorption spectroscopy was used to characterize the local structure and electronic anisotropy of BTS. Fourier transform infrared reflection/transmission spectra show a large in-plane optical anisotropy in the a-oriented crystals, while the c-axis oriented crystals were nearly isotropic in-plane. BTS platelet crystals are promising uniaxial materials for infrared optics with their optic axis parallel to the c-axis. The thermal conductivity measurements revealed a thermal anisotropy of ∼4.5 between the c- and a-axis. Time-domain Brillouin scattering showed that the longitudinal sound speed along the two axes is nearly the same, suggesting that the thermal anisotropy is a result of different phonon scattering rates. 

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4. Harnessing in-plane optical anisotropy in WS ₂ through ReS ₂ crystal

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   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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5. Patterned growth of crystalline Y ₃ Fe ₅ O ₁₂ nanostructures with engineered magnetic shape anisotropy

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