AI Article Synopsis
- Moiré magnetism is a new and exciting area in condensed matter physics that involves unique interactions at the atomic level and is important for exploring complex physics.
- Researchers utilized spin defect-based imaging to observe magnetic domains and spin fluctuations in a materials system known as twisted double trilayer chromium triiodide (tDT CrI).
- The study finds that while there are distinct moiré domains with different magnetizations in tDT CrI, spin fluctuations show minimal variation, highlighting the role of intralayer exchange interactions and the potential of quantum spin sensors for further investigation.
Article Abstract
Moiré magnetism featured by stacking engineered atomic registry and lattice interactions has recently emerged as an appealing quantum state of matter at the forefront of condensed matter physics research. Nanoscale imaging of moiré magnets is highly desirable and serves as a prerequisite to investigate a broad range of intriguing physics underlying the interplay between topology, electronic correlations, and unconventional nanomagnetism. Here we report spin defect-based wide-field imaging of magnetic domains and spin fluctuations in twisted double trilayer (tDT) chromium triiodide CrI. We explicitly show that intrinsic moiré domains of opposite magnetizations appear over arrays of moiré supercells in low-twist-angle tDT CrI. In contrast, spin fluctuations measured in tDT CrI manifest little spatial variations on the same mesoscopic length scale due to the dominant driving force of intralayer exchange interaction. Our results enrich the current understanding of exotic magnetic phases sustained by moiré magnetism and highlight the opportunities provided by quantum spin sensors in probing microscopic spin related phenomena on two-dimensional flatland.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10465594 | PMC |
| http://dx.doi.org/10.1038/s41467-023-40543-z | DOI Listing |
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