Article Dans Une Revue Nature Communications Année : 2023

Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7

C D Dashwood
A H Walker
  • Fonction : Auteur
  • PersonId : 1445687
D G Porter
P. Manuel
F. Orlandi
O. Fabelo
R S Perry
A G Green
D F Mcmorrow

Résumé

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 Ca 3 Ru 2 O 7 , 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 Ca 3 Ru 2 O 7 , 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 induced strain, stimulating the development of a theoretical model in which an internal strain is generated self-consistently to lower the electronic energy. We understand the strain to act by modifying tilts and rotations of the RuO 6 octahedra, which directly influences the nearest-neighbour hopping. Our results offer a blueprint for uncovering the driving force behind coupled phase transitions, as well as a route to controlling them.

Fichier principal
Vignette du fichier
s41467-023-41714-8.pdf (1.8 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-04795889 , version 1 (22-11-2024)

Licence

Identifiants

Citer

C D Dashwood, A H Walker, M P Kwasigroch, L S I Veiga, Q. Faure, et al.. Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7. Nature Communications, 2023, 14, pp.6197. ⟨10.1038/s41467-023-41714-8⟩. ⟨hal-04795889⟩

Collections

52 Consultations
57 Téléchargements

Altmetric

Partager

  • More