Type: Article
Publication Date: 2022-02-03
Citations: 42
DOI: https://doi.org/10.1103/physrevx.12.011023
Experiments show that the unconventional superconductor CeRh${}_{2}$As${}_{2}$ may host a ``quadrupole density wave''---a theorized complex ordering pattern among free electrons that has not yet been observed.