perovskite atlas Structures, modes and phase transitions · Josu M. Igartua · UPV/EHU

Figure 5.8 · Thesis 4 · Orayech 2015

Figure 5.8 · Thesis 4 · Orayech 2015

status thesis-only · visibility public · id plt:thesis-04.5.8

To the left, chain of maximal sub-groups of P m \overline{3} m parent phase space group down-to the experimentally observed low-temperature R 3 c space group phase. To the right, scheme of the polarization vectors of the distortion-modes transforming according to the \mathrm{R}_{4}^{+}and \mathrm{GM}_{4}^{-}irreps, present in the R 3 c structure. The arrows represent the displacements of the atoms in the modes. The two distortion-modes are identified as necessary in the cubic-to-rhombohedral symmetry breaking.

To the left, chain of maximal sub-groups of P m \overline{3} m parent phase space group down-to the experimentally observed low-temperature R 3 c space group phase. To the right, scheme of the polarization vectors of the distortion-modes transforming according to the \mathrm{R}_{4}^{+}and \mathrm{GM}_{4}^{-}irreps, present in the R 3 c structure. The arrows represent the displacements of the atoms in the modes. The two distortion-modes are identified as necessary in the cubic-to-rhombohedral symmetry breaking.

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Thesis 4 · Orayech 2015
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