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@ARTICLE{Freeman:827438,
author = {Freeman, P. G. and Giblin, S. R. and Hradil, K. and Mole,
R. A. and Cermak, P. and Prabhakaran, D.},
title = {{M}agnetic excitations of the charge stripe electrons below
half doping in {L}a$_{2−x}${S}r$_x${N}i{O}$_4$ ($x$ =
0.45, 0.4)},
journal = {Physical review / B},
volume = {95},
number = {6},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2017-01566},
pages = {064403},
year = {2017},
note = {Magnetism and basic research related},
abstract = {The low energy magnetic excitation spectrum of charge
stripe ordered La2-xSrxNiO4, x=0.4 and x=0.45 samples, were
studied by neutron scattering. Two excitation modes are
observed in both materials, one from the ordered magnetic
moments, and a second mode consistent with
pseudo-one-dimensional antiferromagnetic excitations of the
charge stripe electrons (q-1D). The dispersion of the q-1D
excitation follows the same relation as in x=1/3
composition, with even spectral weight in the two
counterpropagating branches of the x=0.4 sample, however in
the x=0.45 sample only one dispersion branch has any
measurable spectral weight. The evolution of the q-1D
excitations on doping to the checkerboard charge ordered
phase is discussed.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / JCNS-2},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-2-20110106},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)PANDA-20140101 / EXP:(DE-MLZ)PUMA-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000396095500004},
doi = {10.1103/PhysRevB.95.064403},
url = {https://juser.fz-juelich.de/record/827438},
}