Journal Article

FZJ-2023-02206

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnon dispersion in ferromagnetic SrRuO 3

Jenni, K. (First author)Extern* ; Kunkemöller, S. ; Tewari, A. ; Ewings, R. A. ; Sidis, Y. ; Schneidewind, A.FZJ* ; Steffens, P. ; Nugroho, A. A. ; Braden, M. (Corresponding author)Extern*

2023
Inst. Woodbury, NY

This record in other databases:    

Please use a persistent id in citations: doi:10.1103/PhysRevB.107.174429  doi:10.34734/FZJ-2023-02206

Abstract: The magnetic excitations in ferromagnetic SrRuO3 were studied by inelastic neutron scattering combiningexperiments on triple-axis and time-of-flight spectrometers with and without polarization analysis. A quadraticspin-wave dispersion with an anisotropy gap describes the low-energy low-temperature response. The magnondispersion extends to at least 35 meV and there is no direct evidence for a continuum of Stoner excitations belowthis energy. However, the magnon response is weakened at higher energy. In addition to the anomalous softeningof the spin-wave stiffness and of the gap, which is induced by the topology of the Bloch states, the magnonexcitations are broadened in energy and this effect increases upon heating.

Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd) ; Magnetism (2nd)

---

Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Streumethoden (JCNS-2)
3. JCNS-4 (JCNS-4)
4. Heinz Maier-Leibnitz Zentrum (MLZ)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
3. SFB 1238 B04 - Untersuchung von Dynamik und Korrelationen mit Neutronenstreuung (B04) (319895566) (319895566)
4. SFB 1238 A02 - Kristallzucht und Materialentwicklung (A02) (319478341) (319478341)

Experiment(s):

1. PANDA: Cold three axes spectrometer (SR2)

Appears in the scientific report 2023

---

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

---