Charge-density-wave order takes over antiferromagnetism in Bi<sub>2</sub>Sr<sub>2-x</sub> La <sub>x</sub> CuO<sub>6</sub> superconductors.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 29097672.
- Also identified by DOI 10.1038/s41467-017-01465-9 and PMC identifier 5668353.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
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 YBa<sub>2</sub>Cu<sub>3</sub>O <sub>y</sub> when a high magnetic field is applied perpendicular to the CuO<sub>2</sub> plane, which was suggested to arise from incipient CDW in the vortex cores that becomes overlapped. Here by <sup>63</sup>Cu-nuclear magnetic resonance, we report the discovery of CDW induced by an in-plane field, setting in above the dome in single-layered Bi<sub>2</sub>Sr<sub>2-x</sub> La <sub>x</sub> CuO<sub>6</sub>. The onset temperature T <sub>CDW</sub> takes over the antiferromagnetic order temperature T <sub>N</sub> beyond a critical doping level at which superconductivity starts to emerge, and scales with the pseudogap temperature T*. These results provide important insights into the relationship between spin order, CDW and the pseudogap, and their connections to high-temperature superconductivity.