DMRG on the half-filled 1D Hubbard chain with a step potential finds Mott, metallic, and band-insulator phases, with the metallic window narrowing as spin polarization increases.
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Controlling quantum phases with electric fields in one-dimensional Hubbard systems
DMRG on the half-filled 1D Hubbard chain with a step potential finds Mott, metallic, and band-insulator phases, with the metallic window narrowing as spin polarization increases.