Journal Article

PUBDB-2025-01051

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetic ground state of the dimer-based hexagonal perovskite Ba$_3$ZnRu$_2$O$_9$

Hayashida, S. (Corresponding author) ; Gretarsson, H.DESY* ; Puphal, P. ; Isobe, M. ; Goering, E. ; Matsumoto, Y. ; Nuss, J. ; Takagi, H.Extern* ; Hepting, M.Extern* ; Keimer, B. (Corresponding author)Extern*

2025
Inst. Woodbury, NY

This record in other databases:      

Please use a persistent id in citations: doi:10.1103/PhysRevB.111.104418  doi:10.3204/PUBDB-2025-01051

Abstract: We investigate the magnetic ground state of single crystals of the ruthenium-dimer-based hexagonal perovskite Ba$_3$⁢ZnRu$_2$⁢O$_9$ using magnetic susceptibility and resonant inelastic x-ray scattering (RIXS) measurements. While a previous study on powder samples exhibited intriguing magnetic behavior, questions about whether the spin state within a Ru$_2$⁢O$_9$ dimer is a conventional 𝑆=3/2 dimer or an orbital-selective 𝑆=1 dimer were raised. The RIXS spectra reveal magnetic excitations from Hund's intraionic multiplet and intradimer spin-triplet transitions. The observed transition energies of the Hund's intraionic multiplets align with the 𝑆=3/2 ground state, contrasting with the theoretically proposed orbital-selective 𝑆=1 dimer state. High-temperature magnetic susceptibility analysis confirms the realization of the spin 𝑆=3/2 dimer state, and the extracted intradimer coupling is consistent with the spin-triplet transition energy observed in the RIXS spectra. These results highlights the ability of “spectroscopic fingerprinting” by RIXS to determine the magnetic ground states of complex materials.

---

Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-S (FS-PETRA-S)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. DFG project G:(GEPRIS)550073412 - Kontrolle der Eigenschaften von Quantenmagneten mittels Resonatoren: Frustration, Verschränkung und konkurrierende Ordnungen (C07#) (550073412) (550073412)

Experiment(s):

1. PETRA Beamline P01 (PETRA III)

Appears in the scientific report 2025

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---