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

The dice lattice, containing a stack of three triangular lattices, has beenproposed to exhibit nontrivial flat bands with nonzero Chern numbers, butunlike the honeycomb lattice it is much less studied. By employingdensity-functional theory (DFT) calculations with an on-site Coulomb repulsionterm, we explore systematically the electronic and topological properties of(La$X$O$_3$)$_3$/(LaAlO$_3$)$_3$(111) superlattices with $X=$ Ti, Mn and Co,where a LaAlO$_3$ trilayer spacer confines the La$X$O$_3$ (L$X$O) dice lattice.In the absence of spin-orbit coupling (SOC) with symmetry constrained to P3,the ferromagnetic (FM) phase of the L$X$O(111) trilayers exhibits a distinctspin-polarized half-metallic state with multiple Dirac crossings and coupledelectron-hole pockets around the Fermi energy. Symmetry lowering induces asignificant rearrangement of bands and triggers a metal-to-insulatortransition. Inclusion of SOC leads to a substantial anomalous Hall conductivity(AHC) around the Fermi energy reaching values up to $\sim-3e^2/h$ for $X=$ Mnand Co in P3 symmetry and both in- and out-of-plane magnetization directions inthe first case and along [001] in the latter. The dice lattice emerges as apromising playground to realise nontrivial topological phases with high Chernnumbers.

High Chern numbers in a perovskite-derived dice lattice (La$X$O$_3$)$_3$/(LaAlO$_3$)$_3$(111) with $X=$ Ti, Mn and Co