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 $^{153}$Eu, $^{75}$As and $^{59}$Co nuclear magnetic resonance(NMR) results on EuCo$_2$As$_2$ single crystal. Observations of $^{153}$Eu and$^{75}$As NMR spectra in zero magnetic field at 4.3 K below anantiferromagnetic (AFM) ordering temperature $T_{\rm N}$ = 45 K and itsexternal magnetic field dependence clearly evidence an incommensurate helicalAFM structure in EuCo$_2$As$_2$. Furthermore, based on $^{59}$Co NMR data inboth the paramagnetic and the incommensurate AFM states, we have determined themodel-independent value of the AFM propagation vector ${\bf k}$ = (0, 0, 0.73$\pm$ 0.07)2$\pi$/$c$ where $c$ is the $c$ lattice parameter. Thus theincommensurate helical AFM state was characterized by only NMR data withmodel-independent analyses, showing NMR to be a unique tool for determinationof the spin structure in incommensurate helical AFMs.

NMR Determination of an Incommensurate Helical Antiferromagnetic Structure in EuCo2As2