Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/6124
Title: Development of the magnetic excitations of charge-stripe ordered La2-x Sr (x) NiO4 on doping towards checkerboard charge order
Authors: Freeman, PG
Giblin, SR
Hradil, K
Mole, RA
Prabhakaran, D
Keywords: Magnetism
Neutrons
Excitation
Scattering
Spin
Ferromagnetism
Issue Date: 1-May-2013
Publisher: Springer
Citation: Freeman, P. G., Giblin, S. R., Hradil, K., Mole, R. A., & Prabhakaran, D. (2013). Development of the magnetic excitations of charge-stripe ordered La2-x Sr (x) NiO4 on doping towards checkerboard charge order. Journal of the Korean Physical Society, 62(10), 1453-1457. doi:10.3938/jkps.62.1453
Abstract: The magnetic excitation spectrums of charge stripe ordered La2-x Sr (x) NiO4 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 40meV was observed for both doping levels, but an additional ferromagnetic mode was observed 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. © 2013, Springer.
Gov't Doc #: 5077
URI: http://dx.doi.org/10.3938/jkps.62.1453
http://apo.ansto.gov.au/dspace/handle/10238/6124
ISSN: 0374-4884
Appears in Collections:Journal Articles

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