Differences Between Hole and Electron Doping of a Two-Leg CuO Ladder

Details Differences Between Hole and Electron Doping of a Two-Leg CuO Ladder Differences Between Hole and Electron Doping of a Two-Leg CuO Ladder

2002-08-09

arxiv.org/abs/cond-mat/0208189v1

Phys. Rev. B 66, 245109 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

REVTEX 4, 10 pages, 13 figures

Scientific paper

10.1103/PhysRevB.66.245109

Here we report results of a density-matrix-renormalization-group (DMRG) calculation of the charge, spin, and pairing properties of a two-leg CuO Hubbard ladder. The outer oxygen atoms as well as the rung and leg oxygen atoms are included along with near-neighbor and oxygen-hopping matrix elements. This system allows us to study the effects of hole and electron doping on a system which is a charge transfer insulator at a filling of one hole per Cu and exhibits power law, d-wave-like pairing correlations when doped. In particular, we focus on the differences between doping with holes or electrons.

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