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 study critical and magnetic properties of a bilayer Ising systemconsisting of two triangular planes A and B, with the antiferromagnetic (AF)coupling $J_{\rm A}$ and the ferromagnetic (FM) one $J_{\rm B}$ for therespective layers, which are coupled by the interlayer interaction $J_{\rm AB}$by using Monte Carlo simulations. When $J_{\rm A}$ and $J_{\rm B}$ are of thesame order, the unfrustrated FM plane orders first at a high temperature$T_{c1} \sim J_{\rm B}$. The spontaneous FM order then exerts influence on theother frustrated AF plane as an effective magnetic field, which subsequentlyinduces a ferrimagnetic order in this plane at low temperatures below $T_{c2}$.When short-range order is developed in the AF plane while the influence of theFM plane is still small, there appears a preemptiveBerezinskii-Kosterlitz-Thouless-like pseudocritical crossover regime just abovethe ferrimagnetic phase transition point, where the short-distance behavior upto a rather large length scale exponentially diverging in $\propto \JA / T$ iscontrolled by a line of Gaussian fixed points at $T = 0$. In the crossoverregion, a continuous variation in the effective critical exponent $4/9 \lesssim\eta^{\rm eff} \lesssim 1/2$ is observed. The phase diagram by changing theratio $J_{\rm A}/J_{\rm B}$ is also investigated.

Ordering phenomena in a heterostructure of frustrated and unfrustrated triangular-lattice Ising layers