Attosecond formation of charge-transfer-to-solvent states of aqueous ions probed using the core-hole-clock technique. - Muchová, E.; Gopakumar, G.; Unger, I.; Öhrwall, G.; Céolin, D.; Trinter, F.; Wilkinson, I.; Chatzigeorgiou, E.; Slavíček, P.; Hergenhahn, U.; Winter, B.; Caleman, C.; et al. (Nature communications, 2024)