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

Figure 5.3 · Thesis 4 · Orayech 2015

Figure 5.3 · Thesis 4 · Orayech 2015

status thesis-only · visibility public · id plt:thesis-04.5.3

To the left, chain of maximal sub-groups of P m \overline{3} m space group down-to the experimentally observed room-temperature A m m 2 space group. The calculations were completed in the standard setting of the room-temperature space group phase: A m m 2. To the right, scheme of the structural polarization vectors, projected on the x z plane, of the distortion-modes transforming according to the \mathrm{GM}_{5}^{-}and \mathrm{GM}_{4}^{-} irreps, present in the A m m 2 structure. The arrows represent the displacements of the atoms in the modes. The two distortion-modes are identified as necessary in the cubic-to-orthorhombic symmetry breaking.

To the left, chain of maximal sub-groups of P m \overline{3} m space group down-to the experimentally observed room-temperature A m m 2 space group. The calculations were completed in the standard setting of the room-temperature space group phase: A m m 2. To the right, scheme of the structural polarization vectors, projected on the x z plane, of the distortion-modes transforming according to the \mathrm{GM}_{5}^{-}and \mathrm{GM}_{4}^{-} irreps, present in the A m m 2 structure. The arrows represent the displacements of the atoms in the modes. The two distortion-modes are identified as necessary in the cubic-to-orthorhombic symmetry breaking.

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Thesis 4 · Orayech 2015
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5.3
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auto-cropped from the OCR Markdown crop box (stage B); materials and kind to be reviewed in Phase 1

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