English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

To explore the doping dependence of the recently discovered charge densitywave (CDW) order in YBa2Cu3Oy, we present a bulk-sensitive high-energy x-raystudy for several oxygen concentrations, including strongly underdopedYBa2Cu3O6.44. Combined with previous data around the so-called 1/8 doping, weshow that bulk CDW order exists at least for hole concentrations (p) in theCuO2 planes of 0.078 <~ p <~ 0.132. This implies that CDW order exists in closevicinity to the quantum critical point for spin density wave (SDW) order. Incontrast to the pseudogap temperature T*, the onset temperature of CDW orderdecreases with underdoping to T_CDW ~ 90K in YBa2Cu3O6.44. Together with aweakened order parameter this suggests a competition between CDW and SDWorders. In addition, the CDW order in YBa2Cu3O6.44 shows the same type ofcompetition with superconductivity as a function of temperature and magneticfield as samples closer to p = 1/8. At low p the CDW incommensurabilitycontinues the previously reported linear increasing trend with underdoping. Inthe entire doping range the in-plane correlation length of the CDW order inb-axis direction depends only very weakly on the hole concentration, andappears independent of the type and correlation length of the oxygen-chainorder. The onset temperature of the CDW order is remarkably close to atemperature T^\dagger that marks the maximum of 1/(T_1T) in planar 63^CuNQR/NMR experiments, potentially indicating a response of the spin dynamics tothe formation of the CDW. Our discussion of these findings includes a detailedcomparison to the charge stripe order in La2-xBaxCuO4.

Competing charge, spin, and superconducting orders in underdoped YBa2Cu3Oy