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Moir\'e magnets

Authors :
Hejazi, Kasra
Luo, Zhu-Xi
Balents, Leon
Publication Year :
2020

Abstract

We introduce a general framework to study moir\'e structures of two-dimensional Van der Waals magnets using continuum field theory. The formalism eliminates quasiperiodicity and allows a full understanding of magnetic structures and their excitations. In particular, we analyze in detail twisted bilayers of N\'eel antiferromagnets on the honeycomb lattice. A rich phase diagram with non-collinear twisted phases is obtained, and spin waves are further calculated. Direct extensions to zig-zag antiferromagnets and ferromagnets are also presented. We anticipate the results and formalism presented to lead to a broad range of applications to both fundamental research and experiments.

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2001.02796
Document Type :
Working Paper