Article ID Journal Published Year Pages File Type
1819487 Physica C: Superconductivity and its Applications 2008 4 Pages PDF
Abstract
In order to study the ground state of the Hubbard model from a slightly doped region to an over-doped one, we directly apply the density renormalization group method to 4-leg × 20-ladder repulsive Hubbard model and calculate hole distribution profiles with changing the on-site repulsion U/t from 0 to 15 and the doping ratio from 0.025 to 0.250. The calculation results in the underdoped range reveal that various stripe structures formed by doped holes merge or separate depending on U/t and the doping ratio. We suggest that these rich features are relevant to modulated hole distributions as experimentally observed in underdoped high-Tc superconductors.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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