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

We present thermodynamic studies of a new spin-1/2 antiferromagnet containingundistorted kagome lattices---barlowite Cu$_{4}$(OH)$_{6}$FBr. Magneticsusceptibility gives $\theta_{CW}$ = $-$136 K, while long-range order does nothappen until $T_{N}$ = 15 K with a weak ferromagnetic moment $\mu$ $<$0.1$\mu_{B}$/Cu. A 60 T magnetic field induces a moment less than0.5$\mu_{B}$/Cu at $T$ = 0.6 K. Specific-heat measurements have observedmultiple phase transitions at $T \ll$ $\mid$$\theta_{CW}$$\mid$. The magneticentropy of these transitions is merely 18% of $k_{B}$ln2 per Cu spin. Theseobservations suggest that nontrivial spin textures are realized in barlowitewith magnetic frustration. Comparing with the leading spin-liquid candidateherbertsmithite, the superior interkagome environment of barlowite sheds lighton new spin-liquid compounds with minimum disorder. The robust perfect geometryof the kagome lattice makes charge doping promising.

Barlowite: A Spin-1/2 Antiferromagnet with a Geometrically Perfect Kagome Motif