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

$A$B$_{2}$ ($A=$K, Rb, Cs) compounds crystallize in the cubic Laves phase(symmetry Fd$\bar{3}$m). The geometry of the crystal structure allows therealization of chiral phonons, which are associated with the circulation ofatoms around their equilibrium positions. Due to the inversion symmetry andtime reversal symmetry, total pseudo-angular momentum (PAM) of the systemvanishes. We show that the doping of these system can lead to a new phase withsymmetry F$\bar{4}3$m. New systems (KRbBi$_{4}$ and RbCsBi$_{4}$) do notexhibit soft modes (are stable dynamically). Due to the inversion symmetrybreaking, realized chiral phonon modes posses a non-zero total PAM. In bothtype of systems the chiral phonons are realized for the wavectors at the edgeof the Brillouine zone. This study explores the possibility of chiral phononengineering via doping, and predicts two new materials. Discussing the problemopens a new way to study the phonon Hall effect.

Chiral phonon in the cubic system based on the Laves phase of $A$Bi$_{2}$ ($A=$K, Rb, Cs)