Divergence of the quadrupole-strain susceptibility of YbRu${}_2$Ge${}_2$; a local moment realization of electronic nematicity

Elliott Rosenberg, Jiun-Haw Chu, Jacob Ruff +2

Ferroquadrupole order associated with local $4f$ atomic orbitals of rare earth ions is a realization of electronic nematic order. However, there are relatively few examples of inte…