  We propose and demonstrate a new magneto-optical trap (MOT) for
alkaline-earth-metal-like (AEML) atoms where the narrow
$^{1}S_{0}\rightarrow$$^{3}P_{1}$ transition and the broad
$^{1}S_{0}\rightarrow$$^{1}P_{1}$ transition are spatially arranged into a
core-shell configuration. Our scheme resolves the main limitations of
previously adopted MOT schemes, leading to a significant increase in both the
loading rate and the steady state atom number. We apply this scheme to
$^{174}$Yb MOT, where we show about a hundred-fold improvement in the loading
rate and ten-fold improvement in the steady state atom number compared to
reported cases that we know of to date. This technique could be readily
extended to other AEML atoms to increase the statistical sensitivity of many
different types of precision experiments.
