AI Article Synopsis
- The Ising model features binary spins and reveals complex behavior on frustrated lattices, like kagome.
- A new study on the layered Ising magnet DyMgSbO shows a phase transition at about 0.3 K from a disordered state to a charge ordered state, where magnetic charge exhibits three-dimensional order while spins remain partially disordered.
- Monte Carlo simulations help explain the stabilization of this emergent state through interactions between layers, spin canting, and chemical disorder, making DyMgSbO a valuable system for exploring kagome Ising frustration.
Article Abstract
The Ising model-in which degrees of freedom (spins) are binary valued (up/down)-is a cornerstone of statistical physics that shows rich behaviour when spins occupy a highly frustrated lattice such as kagome. Here we show that the layered Ising magnet DyMgSbO hosts an emergent order predicted theoretically for individual kagome layers of in-plane Ising spins. Neutron-scattering and bulk thermomagnetic measurements reveal a phase transition at ∼0.3 K from a disordered spin-ice-like regime to an emergent charge ordered state, in which emergent magnetic charge degrees of freedom exhibit three-dimensional order while spins remain partially disordered. Monte Carlo simulations show that an interplay of inter-layer interactions, spin canting and chemical disorder stabilizes this state. Our results establish DyMgSbO as a tuneable system to study interacting emergent charges arising from kagome Ising frustration.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5187434 | PMC |
| http://dx.doi.org/10.1038/ncomms13842 | DOI Listing |
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