TY  - JOUR
AU  - Suzuki, Hakuto
AU  - Wang, L.
AU  - Bertinshaw, J.
AU  - Strand, H. U. R.
AU  - Käser, S.
AU  - Krautloher, Maximilian
AU  - Yang, Z.
AU  - Wentzell, N.
AU  - Parcollet, O.
AU  - Jerzembeck, F.
AU  - Kikugawa, N.
AU  - Mackenzie, A. P.
AU  - Georges, A.
AU  - Hansmann, P.
AU  - Gretarsson, Hlynur
AU  - Keimer, Bernhard
TI  - Distinct spin and orbital dynamics in Sr<sub>2</sub>RuO<sub>4</sub>
JO  - Nature Communications
VL  - 14
IS  - 1
SN  - 2041-1723
CY  - [London]
PB  - Nature Publishing Group UK
M1  - PUBDB-2023-06572
SP  - 7042
PY  - 2023
AB  - The unconventional superconductor Sr<sub>2</sub>RuO<sub>4</sub> has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mechanism requires detailed experimental information on collective bosonic excitations as potential mediators of Cooper pairing. We have used Ru L<sub>3</sub>-edge resonant inelastic x-ray scattering to obtain comprehensive maps of the electronic excitations of Sr<sub>2</sub>RuO<sub>4</sub> over the entire Brillouin zone. We observe multiple branches of dispersive spin and orbital excitations associated with distinctly different energy scales. The spin and orbital dynamical response functions calculated within the dynamical mean-field theory are in excellent agreement with the experimental data. Our results highlight the Hund metal nature of Sr<sub>2</sub>RuO<sub>4</sub> and provide key information for the understanding of its unconventional superconductivity.  
LB  - PUB:(DE-HGF)16
C6  - 37923750
UR  - <Go to ISI:>//WOS:001142547600022
DO  - DOI:10.1038/s41467-023-42804-3
UR  - https://bib-pubdb1.desy.de/record/597358
ER  -