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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Despite the recent discovery of superconductivity inNd$_{1-x}$Sr$_{x}$NiO$_2$ thin films, the absence of superconductivity andantiferromagnetism in their bulk materials remain a puzzle. Here we report the$^{1}$H NMR measurements on powdered Nd$_{0.85}$Sr$_{0.15}$NiO$_2$ samples bytaking advantage of the enriched proton concentration after hydrogen annealing.We find a large full width at half maximum of the spectrum, which keepsincreasing with decreasing the temperature and exhibits an upturn behavior atlow temperatures. The spin-lattice relaxation rate $1/^{1}T_1$ is stronglyenhanced when lowering the temperature, developing a broad peak at about 40 K,then decreases following a spin-wave-like behavior $1/^{1}T_1{\sim}T^2$ atlower temperatures. These results evidence a short-range glassyantiferromagnetic ordering of magnetic moments below 40 K and dominantantiferromagnetic fluctuations extending to much higher temperatures. Ourfindings reveal the strong electron correlations in bulkNd$_{0.85}$Sr$_{0.15}$NiO$_2$, and shed light on the mechanism ofsuperconductivity observed in films of nickelates.

NMR Evidence of Antiferromagnetic Spin Fluctuations in Nd$_{0.85}$Sr$_{0.15}$NiO$_2$