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 have synthesized polycrystalline and single crystal samples of PbCu3TeO7and studied its properties via magnetic susceptibility chi(T) and heat-capacityCp(T) measurements and also electronic structure calculations. Whereas thecrystal structure is suggestive of the presence of a quasi-2D network of Cu2+(S = 1/2) buckled staircase Kagome layers, the chi(T) data show magneticanisotropy and three magnetic anomalies at temperatures, TN1 ~ 36 K, TN2 ~ 25K, TN3 ~ 17 K, respectively. The chi(T) data follow the Curie-Weiss law above200 K and a Curie-Weiss temperature Theta_CW ~ -150 K is obtained. The datadeviate from the simple Curie-Weiss law below 200 K, which is well above TN1,suggesting the presence of competing magnetic interactions. The magneticanomaly at TN3 appears to be of first-order from magnetization measurements,although our heat-capacity Cp(T) results do not display any anomaly at TN3. Thehopping integrals obtained from our electronic structure calculations suggestthe presence of significant intra-Kagome (next-nearest neighbor and diagonal)and inter-Kagome couplings. These couplings take the PbCu3TeO7 system away froma disordered ground state and lead to long-range order, in contrast to whatmight be expected for an ideal (isotropic) 2D Kagome system.

PbCu3TeO7: An S=1/2 staircase Kagome lattice with significant intra- and inter-plane couplings