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   https://doi.org/10.1021/acs.jpcc.2c01577  

   Singh, Aditya; Lynch, Jason; Anantharaman, Surendra B.; Hou, Jin; Singh, Simrjit; Kim, Gwangwoo; Mohite, Aditya D.; Singh, Rajendra; Jariwala, Deep (July 2022, The Journal of Physical Chemistry C)
2. Coupled 2D Semiconductor–Molecular Excitons with Enhanced Raman Scattering

   https://doi.org/10.1021/acs.jpcc.0c06544  

   Muccianti, Christine; Zachritz, Sara L.; Garlant, Angel; Eads, Calley N.; Badada, Bekele H.; Alfrey, Adam; Koehler, Michael R.; Mandrus, David G.; Binder, Rolf; LeRoy, Brian J.; et al (December 2020, The Journal of Physical Chemistry C)

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3. Scattering Elimination in 2D IR Immune from Detector Artifacts

   https://doi.org/10.1021/acs.jpcb.4c04220  

   Casas, Anneka_Miller; Idris, Nehal_S; Wen, Victor; Patterson, Joseph_P; Ge, Nien-Hui (August 2024, The Journal of Physical Chemistry B)
4. Phonon scattering and vibrational localization in 2D embedded nanoparticle composites

   https://doi.org/10.1063/5.0089340  

   Chowdhury, Ongira; Feser, Joseph P. (May 2022, Journal of Applied Physics)

   The frequency domain perfectly matched layer (FDPML) approach is used to study phonon transport in a series of large 2D domains with randomly embedded nanoparticles over a wide range of nanoparticle loadings and wavelengths. The effect of nanoparticle packing density on the mean free path and localization length is characterized. We observe that, in the Mie scattering regime, the independent scattering approximation is valid up to volume fractions exceeding 10% and often higher depending on scattering parameter, indicating that the mean free path can usually be calculated much less expensively using the number density and the scattering cross section of a single scatterer. We also study localization lengths and their dependence on particle loading. For heavy nanoparticles embedded in a lighter material, using the FDPML approach, we only observe localization at volume fractions [Formula: see text] and only for short wavelength modes where vibrational frequencies exceed those available in the embedded nanoparticles. Using modal analysis, we show that localization in nanoparticle laden materials is primarily due to energetic confinement rather than Anderson localization. We then show that, by using light particles in a heavy matrix, the fraction of confined modes can be substantially increased. 

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5. Electronic Raman scattering in the 2D antiferromagnet NiPS ₃

   https://doi.org/10.1126/sciadv.abl7707  

   Wang, Xingzhi; Cao, Jun; Li, Hua; Lu, Zhengguang; Cohen, Arielle; Haldar, Anubhab; Kitadai, Hikari; Tan, Qishuo; Burch, Kenneth S.; Smirnov, Dmitry; et al (January 2022, Science Advances)

   Correlated-electron systems have long been an important platform for various interesting phenomena and fundamental questions in condensed matter physics. As a pivotal process in these systems, d-d transitions have been suggested as a key factor toward realizing optical spin control in two-dimensional (2D) magnets. However, it remains unclear how d-d excitations behave in quasi-2D systems with strong electronic correlation and spin-charge coupling. Here, we present a systematic electronic Raman spectroscopy investigation on d-d transitions in a 2D antiferromagnet—NiPS 3 , from bulk to atomically thin samples. Two electronic Raman modes originating from the scattering of incident photons with d electrons in Ni 2+ ions are observed at ~1.0 eV. This electronic process persists down to trilayer flakes and exhibits insensitivity to the spin ordering of NiPS 3 . Our study demonstrates the utility of electronic Raman scattering in investigating the unique electronic structure and its coupling to magnetism in correlated 2D magnets. 

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