Year-end Sale % OFF 
Abstract
The role of spin–orbit coupling and Hund’s rule coupling on magnetic ordering, anisotropy, and excitations are investigated within a minimal three-orbital model for the 5d3 compound NaOsO3. Small asymmetry between the magnetic moments for the xy and xz, yz orbitals, arising from the hopping asymmetry generated by OsO6 octahedral tilting and rotation, together with the weak correlation effect, are shown to be crucial for the large SOC induced magnetic anisotropy and spin wave gap observed in this compound. Due to the intrinsic SOC-induced changes in the electronic densities under rotation of the staggered field, their coupling with the orbital energy offset is also found to contribute significantly to the magnetic anisotropy energy.
Highlights
The strongly spin-orbit coupled orthorhomic structured 5d3 osmium compound NaOsO3, with nominally three electrons in the Os t2g sector, exhibits several novel electronic and magnetic properties
Small asymmetry between the magnetic moments for the xy and xz, yz orbitals, arising from the hopping asymmetry generated by OsO6 octahedral tilting and rotation, together with the weak correlation effect, are shown to be crucial for the large SOC induced magnetic anisotropy and spin wave gap observed in this compound
These include a G-type antiferromagnetic (AFM) structure with spins oriented along the c axis,[1] a significantly reduced magnetic moment ∼ 1μB as measured from neutron scattering,[1] a continuous metal-insulator transition (MIT) that coincides with the AFM transition (TN = TMIT = 410 K) as seen in neutron and X-ray scattering,[1] and a large spin wave gap of 58 meV as seen in resonant inelastic X-ray scattering (RIXS) measurements indicating strong magnetic anisotropy.[2]
Summary
The strongly spin-orbit coupled orthorhomic structured 5d3 osmium compound NaOsO3, with nominally three electrons in the Os t2g sector, exhibits several novel electronic and magnetic properties These include a G-type antiferromagnetic (AFM) structure with spins oriented along the c axis,[1] a significantly reduced magnetic moment ∼ 1μB as measured from neutron scattering,[1] a continuous metal-insulator transition (MIT) that coincides with the AFM transition (TN = TMIT = 410 K) as seen in neutron and X-ray scattering,[1] and a large spin wave gap of 58 meV as seen in resonant inelastic X-ray scattering (RIXS) measurements indicating strong magnetic anisotropy.[2].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
