The microscopic analysis of experimental data in ${}^{160,162}\mathrm{Tm}$ is presented within the two-quasiparticle-phonon model. The model includes the interaction between odd quasiparticles and their coupling with core vibrations. The coupling explains naturally the attenuation of the Coriolis interaction in rotating odd-odd nuclei. It is shown that the competition between the Coriolis and neutron-proton interactions is responsible for the signature inversion phenomenon.

• Received 19 February 2001

DOI:https://doi.org/10.1103/PhysRevC.63.061305