Hole Localization in One-Dimensional Doped Anderson-Hubbard Model

Details Hole Localization in One-Dimensional Doped Anderson-Hubbard Model Hole Localization in One-Dimensional Doped Anderson-Hubbard Model

2008-03-19

arxiv.org/abs/0803.2793v2

Phys. Rev. Lett. 101, 016407 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.101.016407

We study the interplay of disorder and correlation in the one-dimensional hole-doped Hubbard-model with disorder (Anderson-Hubbard model) by using the density-matrix renormalization group method. Concentrating on the doped-hole density profile, we find in a large $U/t$ regime that the clean system exhibits a simple fluid-like behavior whereas finite disorders create locally Mott regions which expand their area with increasing the disorder strength contrary to the ordinary sense. We propose that such an anomalous Mott phase formation assisted by disorder is observable in atomic Fermi gases by setup of the box shape trap.

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