Core breaking at low spin in Zn68 from nuclear resonance fluorescenceRemoveS. R. Johnson, R. V. F. Janssens, B. A. Brown, A. D. Ayangeakaa, S. S. Bhattacharjee, E. Churchman, S. W. Finch, U. Friman-Gayer, S. Frye, M. Fulghieri, D. Gribble, X. H.-K. James, R. Longland, and C. WegnerPhys. Rev. C 114, 034318 (2026)