Liquid-like spin dynamics in a hybrid Heisenberg-Ising antiferromagnet.

ABSTRACT: Two-dimensional (2D) materials and their heterostructures enable unconventional electronic properties and functionalities not accessible in their bulk counterparts. This approach is now being extended to magnetic materials to engineer their spin structures and magnetic fields produced by them. However, spin dynamics of 2D magnetic heterostructures remain largely unexplored. Here, we demonstrate that heterointerfacing Heisenberg square-lattice antiferromagnet (AF) Sr₂IrO₄ with its bilayer variant Ising AF Sr₃Ir₂O₇ in a superlattice leads to liquid-like spin dynamics in the former, characterized by slow recovery of the AF order after its transient suppression by an optical pump, and complete absence of spin waves except in an immediate v

SUBMITTER: Kim JK 

PROVIDER: S-EPMC11814128 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature