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

Weyl semimetals (WSMs) have recently stimulated intensive interest becausethey exhibit fascinating physical properties and also promise excitingtechnological applications. So far, however, the few conrmed magnetic WSMsgenerally have a large number of Weyl points either located away from the Fermilevel (EF ) or shrouded by nontopological Fermi surface pockets. Based on firstprinciples density functional theory calculations, we establish cubic doubleperovskite BaEuNiOsO6 to be a high Curie temperature (Tc) ferromagnetic WSMwith magnetization along the [111] direction, just two pairs of Weyl points atthe EF and Tc = 325 K. The strong ferromagnetism is attributed to the strongferromagnetic Ni 3d-Eu 4f-Os 5d coupling induced by the substitution of half ofBa atoms with Eu atoms in double perovskite Ba2NiOsO6. Moreover, the momentumseparation of one Weyl point pair is large, thus giving rise to not only a long(001) surface Fermi arc but also large anomalous Hall conductivity.Intriguingly, as a unique physical result of a ferromagnetic WSM, the (111)BaEuNiOsO6 monolayer superlattice (BaEuNiOsO6)/(BaTiO3)10, being its (111)quantum-well structure, is found to be a high temperature (Tc = 210 K) Cherninsulator with a large band gap of 190 meV. Therefore, cubic double perovskiteBaEuNiOsO6 will provide a superior high temperature material plotform forexploring fundamental physics of Weyl fermions and its (111) monolayersuperlattices will offer a high temperature magnetic topological insulator forstudying exotic quantum phenomena such as quantum anomalous Hall effect.

High temperature ideal Weyl semimetal phase and Chern insulator phase in ferromagnetic BaEuNiOsO6 and its (111) (BaEuNiOsO6)/(BaTiO3)10 superlattice