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DOE OSTI · 1617237

Noncollinear phases in moiré magnets

Hejazi, Kasra·Luo, Zhu-Xi·Balents, Leon
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Abstract

Significance Moiré patterns, which result when two or more two-dimensional materials with incommensurate or rotated lattices are layered together, create controllable electronic bands that have recently been shown to induce a tremendous wealth of physical phenomena. Here we initiate the theoretical study of moiré patterns’ influence on magnetic states of localized spins. We construct a general formalism using continuum field theory and present thorough analyses in twisted bilayers of antiferromagnets and also ferromagnets, which are within the experimental reach of Van der Waals materials. Two-dimensional magnets, well known for their strong intrinsic spin fluctuations, may serve as a new platform for moiré effects and open the door to a large class of novel phenomena that were once unimaginable.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSVan der Waals magnetshydrodynamicsmoirétwisted bilayer

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Hejazi, Kasra, Luo, Zhu-Xi, Balents, Leon. 2020-05-04. Noncollinear phases in moiré magnets. https://doi.org/10.1073/pnas.2000347117

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