Abstract
Shell-model intruder states are observed to act as intrinsic states on which regular rotational-like bands are built. We present evidence for this particular type of excitations to be a general feature of excitations in doubly-odd nuclei such as 114, 116Sb, where either the odd-proton (or odd-neutron) number is near a closed shell configuration. A possible explanation in terms of a simplified odd-proton-odd-neutron vibrational core coupling model is outlined as well as attempts starting from a more microscopic calculation in terms of shell-model excitations.
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