Identification of Excited States in Te5552107

Excited states in the extremely neutron-deficient nucleus $^{107}\mathrm{Te}$ have been identified from two separate experiments using the recoil-decay tagging technique. Two connected structures were observed on the basis of $\ensuremath{\gamma}\ensuremath{\gamma}$-coincidence relations and tentatively assigned as built on the mixed-parentage $\ensuremath{\nu}{g}_{7/2}{d}_{5/2}$ and $\ensuremath{\nu}{h}_{11/2}$ intruder configurations. The observed structures were compared with large-scale shell-model calculations and total Routhian surface calculations. Collective behavior was discovered to persist in the $\ensuremath{\nu}{h}_{11/2}$ band of $^{107}\mathrm{Te}$ which highlights the shape-polarizing effect of a single valence neutron occupying the ${h}_{11/2}$ intruder orbit as the $N=50$ shell closure is approached.