Suppression of indirect exchange and symmetry breaking in the antiferromagnetic metal HoB12 with dynamic charge stripes
Precise angle-resolved magnetoresistance (ARM) measurements are applied to reveal the origin of symmetry
lowering in electron transport and the emergence of a huge number of magnetic phases in the ground state of the
antiferromagnetic metal HoB12 with fcc crystal structure. By analyzing the polar H-θ-ϕ magnetic phase diagrams
of this compound reconstructed from the experimental ARM data, we argue that nonequilibrium electron density
oscillations (dynamic charge stripes) are responsible for the suppression of the indirect Ruderman-Kittel-Kasuya-
Yosida exchange along the <110> directions between the nearest neighboring magnetic moments of Ho3+ ions in
this strongly correlated electron system.