Beiträge in Tagungsbänden:
P. Freeman, S. Giblin, K. Hradil, R. Mole, D. Prabhakaran:
"Development of the magnetic excitations of charge-stripe ordered La2-xSrxNiO4 on doping towards checkerboard charge order";
in: "Proceedings of the International Conference on Magnetism",
herausgegeben von: The Korean Physical Society;
Springer,
2013,
ISSN: 0374-4884,
S. 1453
- 1457.
Kurzfassung englisch:
The magnetic excitation spectrums of charge stripe ordered La2-xSrxNiO4 x = 0.45 and x = 0.4 were studied by inelastic neutron scattering. We found the magnetic excitation spectrum of x = 0.45 from the ordered Ni2+ S = 1 spins to match that of checkerboard charge ordered La1.5Sr0.5NiO4. The distinctive asymmetry in the magnetic excitations above 40 meV was obsd. for both doping levels, but an addnl. ferromagnetic mode was obsd. in x = 0.45 and not in the x = 0.4. We discuss the origin of crossover in the excitation spectrum between x = 0.45 and x = 0.4 with respect to discommensurations in the charge stripe structure.
Schlagworte:
Stripe-ordered;La2−xSrxNiO4; Excitations
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.3938/jkps.62.1453
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.