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

Magnetic excitations of the effective spin $S$=1/2 dimerized magnetBa$_2$CoSi$_2$O$_6$Cl$_2$ have been probed directly via inelastic neutronscattering experiments at temperatures down to 4 K. We observed five types ofexcitation at 4.8, 5.8, 6.6, 11.4, and 14.0 meV, which are all dispersionlesswithin the resolution limits. The scattering intensities of the three low-lyingexcitations were found to exhibit different $Q$-dependences. Detailed analysishas demonstrated that Ba$_2$CoSi$_2$O$_6$Cl$_2$ is a two-dimensional spin dimersystem described only by a single dimer site, where the triplet excitations arelocalized owing to the almost perfect frustration of the interdimer exchangeinteractions and the undimerized spins, even in small concentration, make anessential contribution to the excitation spectrum.

Localized magnetic excitations in the fully frustrated dimerized magnet Ba$_2$CoSi$_2$O$_6$Cl$_2$