TY  - JOUR
AU  - Yumnam, George
AU  - Raghuvanshi, Parul R.
AU  - Budai, John D.
AU  - Bocklage, Lars
AU  - Abernathy, Douglas
AU  - Cheng, Yongqiang
AU  - Said, Ayman
AU  - Mazin, Igor I.
AU  - Zhou, Haidong
AU  - Frandsen, Benjamin A.
AU  - Parker, David S.
AU  - Lindsay, Lucas R.
AU  - Cooper, Valentino R.
AU  - Manley, Michael E.
AU  - Hermann, Raphael
TI  - Constraints on magnetism and correlations in RuO<sub>2</sub> from lattice dynamics and Mössbauer spectroscopy
JO  - Cell reports / Physical science
VL  - 6
SN  - 2666-3864
CY  - Maryland Heights, MO
PB  - Cell Press
M1  - PUBDB-2025-04018
SP  - 102852
PY  - 2025
AB  - 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. 
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1016/j.xcrp.2025.102852
UR  - https://bib-pubdb1.desy.de/record/638200
ER  -