%0 Journal Article
%A Yumnam, George
%A Raghuvanshi, Parul R.
%A Budai, John D.
%A Bocklage, Lars
%A Abernathy, Douglas
%A Cheng, Yongqiang
%A Said, Ayman
%A Mazin, Igor I.
%A Zhou, Haidong
%A Frandsen, Benjamin A.
%A Parker, David S.
%A Lindsay, Lucas R.
%A Cooper, Valentino R.
%A Manley, Michael E.
%A Hermann, Raphael
%T Constraints on magnetism and correlations in RuO<sub>2</sub> from lattice dynamics and Mössbauer spectroscopy
%J Cell reports / Physical science
%V 6
%@ 2666-3864
%C Maryland Heights, MO
%I Cell Press
%M PUBDB-2025-04018
%P 102852
%D 2025
%X We provide experimental evidence for the absence of a magnetic moment in bulk RuO<sub>2</sub>, a candidate altermagnetic material, by using a combination of Mössbauer spectroscopy, nuclear forward scattering, inelastic X-ray and neutron scattering, and density functional theory calculations. Using complementary Mössbauer and nuclear forward scattering, we determine the Ru magnetic hyperfine splitting to be negligible. Inelastic X-ray and neutron scattering-derived lattice dynamics of RuO<sub>2</sub> are compared to density functional theory calculations of varying flavors. Comparisons among theory with experiments indicate that electronic correlations, rather than magnetic order, are key in describing the lattice dynamics. 
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1016/j.xcrp.2025.102852
%U https://bib-pubdb1.desy.de/record/638200