https://coxsignal.com/index.ph....p/quantifying-as-wel
The movies reveal in-plane compression and out-of-plane expansion, resulting in a lowering from the bulk cubic to tetragonal lattice symmetry. This leads to the splitting associated with F2g Raman mode within the cubic phase to B2g and E g modes into the tetragonal lattice. The balance and frequency of these modes are decided by polarized Raman in the backscattering and right-angle scattering geometries along
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