Loading…
Development of the magnetic excitations of charge-stripe ordered La2−xSrxNiO4 on doping towards checkerboard charge order
The magnetic excitation spectrums of charge stripe ordered La 2− x Sr x NiO 4 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 Ni 2+ S = 1 spins to match that of checkerboard charge ordered La 1.5 Sr 0.5 NiO 4 ....
Saved in:
Published in: | Journal of the Korean Physical Society 2013, 62(10), , pp.1453-1457 |
---|---|
Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | The magnetic excitation spectrums of charge stripe ordered La
2−
x
Sr
x
NiO
4
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 Ni
2+
S = 1 spins to match that of checkerboard charge ordered La
1.5
Sr
0.5
NiO
4
. 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. |
---|---|
ISSN: | 0374-4884 1976-8524 |
DOI: | 10.3938/jkps.62.1453 |