Fig. 1: Polarization selection rules.
a Sketch illustrating orientation of SrIrO3 crystal unit cell of Pnma space group on (101)-DyScO3 substrate. A pseudocubic unit cell of SrIrO3 is designated by blue dashed lines. The XYZ-coordinate system concerning the backscattering Raman experiments is marked in black arrows. Incoming laser propagates along Z-axis, as shown by a red wavy-arrow through a microscope objective. b Calculated Fermi surface is shown in 1-Ir (pseudocubic unit cell) Brillouin zone (BZ) for the respective pseudocubic unit cell. The electron pockets are at (±π/2, ±π/2), whereas the rest arises from hole-like bands. Note that the hole pocket at the Γ-point and at the 1-Ir BZ boundary at (±π, 0) are equivalent. c Electronic Raman scattering structure factors are shown on 1-Ir BZ (right panels) for the respective scattering configurations, namely \({{Z}}({{X}}^{\prime} {{Y}}^{\prime} )\bar{Z}\) and \({{Z}}({{XY}})\bar{Z}\), as depicted in left panels. The corresponding symmetries are Eg and T2g according to the point group of Oh, respectively.
