Related Experiment Video
Updated: Jun 21, 2025

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
Observation of stacking engineered magnetic phase transitions within moiré supercells of twisted van der Waals
Senlei Li1, Zeliang Sun2, Nathan J McLaughlin3
1School of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
Abstract:
Recent demonstrations of moiré magnetism, featuring exotic phases with noncollinear spin order in the twisted van der Waals (vdW) magnet chromium triiodide CrI3, have highlighted the potential of twist engineering of magnetic (vdW) materials. However, the local magnetic interactions, spin dynamics, and magnetic phase transitions within and across individual moiré supercells remain elusive. Taking advantage of a scanning single-spin magnetometry platform, here we report observation of two distinct magnetic phase transitions with separate critical temperatures within a moiré supercell of small-angle twisted double trilayer CrI3. By measuring temperature-dependent spin fluctuations at the coexisting ferromagnetic and antiferromagnetic regions in twisted CrI3, we explicitly show that the Curie temperature of the ferromagnetic state is higher than the Néel temperature of the antiferromagnetic one by ~10 K. Our mean-field calculations attribute such a spatial and thermodynamic phase separation to the stacking order modulated interlayer exchange coupling at the twisted interface of moiré superlattices.
More Related Videos
Related Concept Videos
Magnetic Field due to Moving Charges
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Ferromagnetism
Atomic Nuclei: Nuclear Relaxation Processes
Magnetostatic Boundary Conditions
Magnetic Field Lines
Magnetic field lines follow several hard-and-fast rules:
Atomic Nuclei: Nuclear Spin State Overview

