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Research Highlight | Center for Nanoscale Materials

Spin-mediated shear oscillators in a van der Waals antiferromagnet

In a Nature paper, scientists present results from ultrafast electron diffraction and microscopy analyses to investigate the dynamic behavior of a self-supporting antiferromagnetic film.

Scientific Achievement

For antiferromagnets without net magnetic moment, how spin ordering couples to macroscopic movement remains elusive. Here we observed a seesaw-like rotation of reciprocal lattice peaks of an antiferromagnetic nanolayer film.

Significance and Impact

This work is the first microscopic view of spin-mediated mechanical motion of an antiferromagnet, and it also identifies a new route towards realizing high-frequency resonators up to the millimeter band.

Research Details

  • Using a suite of ultrafast diffraction and microscopy techniques, we directly visualize this spin-driven rotation in reciprocal space at the nanoscale. This motion corresponds to interlayer shear in real space

DOI: 10.1038/s41586-023-06279-y

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