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

We report a comprehensive x-ray scattering study of charge density wave(stripe) ordering in $\rm La_{2-x}Ba_xCuO_4 (x \approx 1/8)$, for which thesuperconducting $T_c$ is greatly suppressed. Strong superlattice reflectionscorresponding to static ordering of charge stripes were observed in thissample. The structural modulation at the lowest temperature was deduced basedon the intensity of over 70 unique superlattice positions surveyed. We foundthat the charge order in this sample is described with one-dimensional chargedensity waves, which have incommensurate wave-vectors (0.23, 0, 0.5) and (0,0.23, 0.5) respectively on neighboring $\rm CuO_2$ planes. The structuralmodulation due to the charge density wave order is simply sinusoidal, and nohigher harmonics were observed. Just below the structural transitiontemperature, short-range charge density wave correlation appears, whichdevelops into a large scale charge ordering around 40 K, close to the spindensity wave ordering temperature. However, this charge ordering fails to growinto a true long range order, and its correlation length saturates at $\sim230\AA$, and slightly decreases below about 15 K, which may be due to the onsetof two-dimensional superconductivity.

Properties of charge density waves in La$_{2-x}$Ba$_{x}$CuO$_4$