Magnetism Localization in Spin-Polarized One-Dimensional Anderson-Hubbard Model

Details Magnetism Localization in Spin-Polarized One-Dimensional Anderson-Hubbard Model Magnetism Localization in Spin-Polarized One-Dimensional Anderson-Hubbard Model

2008-10-22

arxiv.org/abs/0810.3953v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

In order to study an interplay of disorder, correlation, and spin imbalance on antiferromagnetism, we systematically explore the ground state of one-dimensional spin-imbalanced Anderson-Hubbard model by using the density-matrix renormalization group method. We find that disorders localize the antiferromagnetic spin density wave induced by imbalanced fermions and the increase of the disorder magnitude shrinks the areas of the localized antiferromagnetized regions. Moreover, the antiferromagnetism finally disappears above a large disorder. These behaviors are observable in atomic Fermi gases loaded on optical lattices and disordered strongly-correlated chains under magnetic field.

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