Kavli Affiliate: David A. Muller
| First 5 Authors: Shannon S. Fender, Shannon S. Fender, , ,
| Summary:
The interplay between symmetry and topology in magnetic materials makes it
possible to engineer exotic phases and technologically useful properties. A key
requirement for these pursuits is achieving control over local crystallographic
and magnetic structure, usually through sample morphology (such as synthesis of
bulk crystals versus thin-films) and application of magnetic or electric
fields. Here we show that V$_1/3$NbS$_2$ can be crystallized in two ordered
superlattices, distinguished by the periodicity of out-of-plane magnetic
intercalants. Whereas one of these structures is metallic and displays the
hallmarks of altermagnetism, the other superlattice, which has not been
isolated before in this family of intercalation compounds, is a semimetallic
noncollinear antiferromagnet that may enable access to topologically nontrivial
properties. This observation of an unconventional superlattice structure
establishes a powerful route for tailoring the tremendous array of magnetic and
electronic behaviors hosted in related materials.
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