Competition between magnetism and charge-density waves in 2D quantum magnets

Determine whether magnetism in two-dimensional quantum magnets competes with or complements charge-density-wave phases by characterizing their coexistence, mutual exclusion, and interplay across relevant materials and thicknesses, and by mapping the phase diagrams under controlled substrates and external parameters.

Background

This roadmap highlights the intertwined physics of correlation and topology in 2D magnets and kagome systems, where multiple ordered phases can emerge. Understanding whether magnetic order competes with or supports charge-density waves (CDWs) is central to predicting and controlling quantum phases such as the quantum anomalous Hall effect.

The authors note structural challenges (e.g., stacking disorder) and substrate effects that complicate interpretation, underscoring the need for atomistic theory and high-quality samples to resolve the relationship between magnetism and CDWs.