Kavli Affiliate: Leon Balents
| First 5 Authors: Kasra Hejazi, Zhu-Xi Luo, Leon Balents, ,
| Summary:
We study untwisted heterobilayers of ferromagnetic and antiferromagnetic van
der Waals materials, with in particular a Dzyaloshinskii-Moriya interaction in
the ferromagnetic layer. A continuum low energy field theory is utilized to
study such systems. We develop a phase diagram as a function of the strength of
inter-layer exchange and Dzyaloshinskii-Moriya interactions, combining
perturbative and strong coupling analyses with numerical simulations using
Landau-Lifshitz-Gilbert equations. Various moir’e-periodic commensurate phases
are found, and the commensurate-incommensurate transition is discussed. Among
the commensurate phases, we observe an interesting skyrmion lattice phase
wherein each moir’e unit cell hosts one skyrmion.
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