Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Magnetic field dependence of antiferromagnetic resonance in NiO

MPG-Autoren
/persons/resource/persons21693

Kampfrath,  Tobias
Physical Chemistry, Fritz Haber Institute, Max Planck Society;
Department of Physics, Freie Universitt Berlin;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)

1806.07968.pdf
(Preprint), 833KB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Wang, Z., Kovalev, S., Awari, N., Chen, M., Germanskiy, S., Green, B., et al. (2018). Magnetic field dependence of antiferromagnetic resonance in NiO. Applied Physics Letters, 112(25): 252404. doi:10.1063/1.5031213.


Zitierlink: https://hdl.handle.net/21.11116/0000-0001-9069-6
Zusammenfassung
We report on measurements of magnetic field and temperature dependence of antiferromagnetic resonances in the prototypical antiferromagnet NiO. The frequencies of the magnetic resonances in the vicinity of 1 THz have been determined in the time-domain via time-resolved Faraday measurements after selective excitation by narrow-band superradiant terahertz (THz) pulses at temperatures down to 3K and in magnetic fields up to 10 T. The measurements reveal two antiferromagnetic resonance modes, which can be distinguished by their characteristic magnetic field dependencies. The nature of the two modes is discussed by comparison to an eight-sublattice antiferromagnetic model, which includes superexchange between the next-nearest-neighbor Ni spins, magnetic dipolar interactions, cubic magneto-crystalline anisotropy, and Zeeman interaction with the external magnetic field. Our study indicates that a two-sublattice model is insufficient for the description of spin dynamics in NiO, while the magnetic-dipolar interactions and magneto-crystalline anisotropy play important roles.