  The effects of four-quasiparticle configurations and time-odd interactions
are investigated in the framework of configuration interaction projected
density functional theory by taking the yrast states of 60Fe as examples. Based
on the universal PC-PK1 density functional, the energies of the yrast states
with spin up to 20\hbar and the available B(E2) transition probabilities are
well reproduced. The yrast states are predicted to be of four-quasiparticle
structure above spin I = 16\hbar. The inclusion of the time-odd interactions
increases the kinetic moments of inertia and delays the appearance of the first
band crossing, and, thus, improves the description of the data.

Nuclear Theory