Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1819515 | Physica C: Superconductivity and its Applications | 2008 | 4 Pages |
Abstract
We study one-dimensional and 3-leg ladder repulsive Hubbard models with random potential by using the density-matrix renormalization group method. When holes are slightly doped to the half-filling, the local Mott phase called “Mott plateau” and the local dip structure in density profile called “hole localized valley” are well-separately observable in strong on-site repulsive U/t and strong randomness for both models. We suggest that these separated structures qualitatively capture locally inhomogeneous characters seen in heavily under-doped High-Tc superconductors.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
M. Okumura, S. Yamada, N. Taniguchi, M. Machida,