Superconducting charge-ordered states in cuprates

Details Superconducting charge-ordered states in cuprates Superconducting charge-ordered states in cuprates

2002-04-14

arxiv.org/abs/cond-mat/0204284v2

Phys. Rev. B 66, 104505 (2002)

Physics

Condensed Matter

Superconductivity

5 pages, 4 figs; (v2) extended discussion; final version as published

Scientific paper

10.1103/PhysRevB.66.104505

Motivated by recent neutron scattering and scanning tunneling microscopy (STM) experiments on cuprate superconductors, we discuss charge-ordered states, in particular with two-dimensional charge modulation patterns, co-existing with superconductivity. We extend previous studies of a large-N mean-field formulation of the t-J model. In addition to bond-centered superconducting stripe states at low doping, we find checkerboard-modulated superconducting states which are favorable in an intermediate doping interval. We also analyze the energy dependence of the Fourier component of the local density of states at the ordering wavevector for several possible modulation patterns, and compare with STM results.

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