Nuclear structure of ${}^{97}\mathrm{Y}$ in the interacting boson fermion plus broken pair model and the nature of the 3.523 MeV high-spin isomer

Nuclear structure of ${}^{97}\mathrm{Y}$ is described in the interacting boson fermion plus broken pair model, including quasiproton and quasiproton-two-quasineutron configurations in the basis states. In particular, the yrast bands and the decay of the ${27/2}^{-}$ high-spin isomer are accounted for in this approach.