Polarization dependence of a momentum-localized isotropic magnetic excitation in Ca3Ru(2-x)Ti(X)O7
The role of Spin-Orbit Coupling (SOC) in the 4d-electron Ruthenates has become an increasingly studied area of physics in recent years. Our recent work on Ca2RuO4 indicates that the system lies in a crossover regime between 3d-like and 5d-like physics, with the presence of a novel excitonic magnetism identified through inelastic neutron scattering (INS). This result provides a fresh impetus to investigate the evolution of SOC in related systems. The focus of this proposal is a Mott insulating state that is stabilised in the bilayer system Ca3Ru2O7 with minor Ti substitution of the Ru-site. Our INS studies of Ca3Ru1.98Ti0.02O7 indicate that the Ti-dopant induces a transition from ferromagnetic to antiferromagnetic exchange and a significant increase in single-ion anisotropy, resulting in a spin wave with distinct similarity to Ca2RuO4. Further, an anomalous intense localised feature emerges in the inelastic spectrum that lies below the spin-wave gap at the magnetic zone centre. Here we propose a robust investigation using polarized inelastic neutron scattering on IN20 to conclusively determine the polarization and thus the origin of the magnetic modes in Ti-doped Ca3Ru2O7.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
Maximilian J. Krautloher; J Bertinshaw; ENDERLE Mechthild; HEPTING Matthias; IVANOV Alexandre; KEIMER Bernhard; PORRAS PEREZ GUERRERO Juan Pablo and TREPKA Heiko. (2019). Polarization dependence of a momentum-localized isotropic magnetic excitation in Ca3Ru(2-x)Ti(X)O7. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1613
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.