  The shell-model-like approach (SLAP) based on cranking covariant density
functional theory (CDFT) with a separable pairing force is developed. The
developed cranking CDFT-SLAP with separable pairing force is applied to
investigate the rotational spectra in $^{60}$Fe, including the positive-parity
yrast band and two negative-parity signature partner bands, in comparison with
the cranking CDFT-SLAP with monopole pairing force calculations. Excellent
agreement with the available data is achieved.
