Kompanets, V. O., Feng, S., Zhang, Y., Kartashov, Y. V., Li, Y., Zhuravitskii, S. A., Skryabin, N. N., Kireev, A. V., Dyakonov, I. V., Kalinkin, A. A., Shang, C., Kulik, S. P., Chekalin, S. V., Zadkov, V. N. (2025). Observation of Nonlinear Topological Corner States Originating from Different Spectral Charges. Advanced Materials. https://doi.org/10.1002/adma.202500556