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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

A recent density functional theory (DFT) based analysis, complemented withQuantum Monte Carlo calculations revealed a highly spin-frustrating nature ofthe one-dimensional spin-$\frac{1}{2}$ compound $Cs_2CuAl_4O_8$ that comprisesof unique bond alternations and relatively strong next nearest neighborinteractions. This article gives a brief account on possible magnon excitationsthat can appear in the ground state of such systems. We find that the spinwaves obtained on top of coplanar helical reference states show multiple magnonmodes (both acoustic and optical). However, those magnon modes turn out to bestable only in the absence of bond alternations.

Magnon excitations in $Cs_2CuAl_4O_8$ - a bond alternating S=1/2 spin chain with next nearest neighbor coupling