Wüthrich, A., Bläsing, J., Strittmatter, A., Kumar, R., Gopakumar, G., Manfra, M. J., Malis, O., Goldhahn, R., Feneberg, M. (2026). Optical study of the two-dimensional electron gas and the total electronic polarization discontinuity in Sc
x
Al1−
x
N/GaN heterostructures. Applied Physics Letters. https://doi.org/10.1063/5.0336821