paper

Charge-density-wave order takes over antiferromagnetism in BiSrLaCuO superconductors

arXiv:1704.06169 · doi:10.1038/s41467-017-01465-9

Abstract

Superconductivity appears in the cuprates when a spin order is destroyed, while the role of charge is less known. Recently, charge density wave (CDW) was found below the superconducting dome in YBaCuO when a high magnetic field is applied perpendicular to the CuO plane, which was suggested to arise from incipient CDW in the vortex cores that becomes overlapped. Here, by Cu-nuclear magnetic resonance, we report the discovery of CDW induced by an in-plane field that does not create vortex cores in the plane, setting in above the dome in single-layered BiSrLaCuO.The onset temperature takes over the antiferromagnetic order temperature beyond a critical doping level at which superconductivity starts to emerge, and scales with the psudogap temperature . These results provide important insights into the relationship between spin order, CDW and the pseudogap, and their connections to high-temperature superconductivity.

22 pages, 8 figures

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