Strain control of a bandwidth-driven spin reorientation in Ca₃Ru₂O₇.

ABSTRACT: The layered-ruthenate family of materials possess an intricate interplay of structural, electronic and magnetic degrees of freedom that yields a plethora of delicately balanced ground states. This is exemplified by Ca₃Ru₂O₇, which hosts a coupled transition in which the lattice parameters jump, the Fermi surface partially gaps and the spins undergo a 90^∘ in-plane reorientation. Here, we show how the transition is driven by a lattice strain that tunes the electronic bandwidth. We apply uniaxial stress to single crystals of Ca₃Ru₂O₇, using neutron and resonant x-ray scattering to simultaneously probe the structural and magnetic responses. These measurements demonstrate that the transition can be driven by externally

SUBMITTER: Dashwood CD 

PROVIDER: S-EPMC10550943 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature