2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/139404Physicists have long debated whether the hidden order in URu2Si2 is itinerant or localized, and it remains inaccessible to direct external probes. Recent observation of an overdamped collective mode in this material (C. Weibe et al, Nature Physics 3, 96-100 (2007)), appears to resolve this outstanding issue.Archival version of Nature Physics News and ViewsStrongly Correlated ElectronsSuperconductivitytext