Charge Modulations in the Superconducting State of the Cuprates

Details Charge Modulations in the Superconducting State of the Cuprates Charge Modulations in the Superconducting State of the Cuprates

2002-10-17

arxiv.org/abs/cond-mat/0210386v1

Physics

Condensed Matter

Superconductivity

3 pages with 4 figures. To be published in PRB

Scientific paper

10.1103/PhysRevB.66.214515

Motivated by the recent scanning tunneling microscopy (STM) and neutron scattering experiments, we investigate various charge density wave orders coexisting with superconductivity in the cuprate superconductors. The explicit expressions of the local density of states and its Fourier component at the ordering wavevector for the weak charge modulations are derived. It is shown that the STM experiments in $Bi_2Sr_2CaCu_2O_{8+\delta}$ cannot be explained by a site- or bond-centered charge modulation alone, but agree well with the presence of the dimerization hopping and transverse pairing modulations. We also calculate the spectral function for the charged stripes, which is measured by the ARPES experiments.

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