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- W3128785004 abstract "$mathrm{NdGa}{mathrm{O}}_{3}$ (NGO) is an important substrate material often used in depositing functional oxide thin films. We have carried out temperature-dependent polarized Raman and infrared spectroscopy studies along with theoretical calculations on single-crystal NGO, which revealed a structural phase transition from centrosymmetric space group Pbnm to noncentrosymmetric space group $Pbn{2}_{1}$ at ensuremath{sim}200 K. The microscopic origin of the phase transition is extracted using a unique protocol involving polarized Raman spectroscopy (PRS) studies carried out as a function of crystallographic orientation. Here, we demonstrate the power of PRS in probing directional atomic rearrangements across the phase transition." @default.
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- W3128785004 date "2021-02-08" @default.
- W3128785004 modified "2023-10-18" @default.
- W3128785004 title "Breaking of inversion symmetry in NdGaO3" @default.
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- W3128785004 doi "https://doi.org/10.1103/physrevb.103.054106" @default.
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