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We study the doping-driven Mott metal-insulator transition for multi-orbitalHubbard models with Hund's exchange coupling at finite temperatures. As in thesingle-orbital Hubbard model, the transition is of first-order within dynamicalmean field theory, with a coexistence region where two solutions can bestabilized. We find, that in the presence of finite Hund's coupling, theinsulating phase is connected to a badly metallic phase, which extends tosurprisingly large dopings. While fractional power-law behavior of theself-energies on the Matsubara axis is found on both sides of the transition, aregime with frozen local moments develops only on the branch connected to theinsulating phase.

Nature of the Doping-Driven Metal-Insulator Transition in Correlated Electron Systems with strong Hund's Exchange Coupling