Superconducting d-wave stripes in cuprates: Valence bond order coexisting with nodal quasiparticles

Details Superconducting d-wave stripes in cuprates: Valence bond order coexisting with nodal quasiparticles Superconducting d-wave stripes in cuprates: Valence bond order coexisting with nodal quasiparticles

2007-09-27

arxiv.org/abs/0709.4244v2

Phys. Rev. B 77, 094504 (2008)

Physics

Condensed Matter

Superconductivity

5 pages, 3 figs, (v2) final version to be published in PRB

Scientific paper

10.1103/PhysRevB.77.094504

We point out that unidirectional bond-centered charge-density-wave states in cuprates involve electronic order in both s- and d-wave channels, with non-local Coulomb repulsion suppressing the s-wave component. The resulting bond-charge-density wave, coexisting with superconductivity, is compatible with recent photoemission and tunneling data and as well as neutron-scattering measurements, once long-range order is destroyed by slow fluctuations or glassy disorder. In particular, the real-space structure of d-wave stripes is consistent with the scanning-tunneling-microscopy measurements on both underdoped Bi2Sr2CaCu2O8+x and Ca2-xNaxCuO2Cl2 of Kohsaka et al. [Science 315, 1380 (2007), arXiv:cond-mat/0703309].

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