Magnetic order and dynamics in stripe-ordered La2-xSrxNiO4
1.
SYSNO ASEP
0101897
Document Type
J - Journal Article
R&D Document Type
Journal Article
Subsidiary J
Ostatní články
Title
Magnetic order and dynamics in stripe-ordered La2-xSrxNiO4
Title
Magnetické uspořádání a dynamika v pruhově uspořádaném La2-xSrxNiO4
Author(s)
Boothroyd, A. T. (GB) Freeman, P. G. (GB) Prabhakaran, D. (GB) Enderle, M. (GB) Kulda, Jiří (UJF-V)
Source Title
Physica B-Condensed Matter. - : Elsevier
- ISSN 0921-4526
Roč. 345, č. 1 (2004), s. 1-5
Number of pages
5 s.
Language
eng - English
Country
NL - Netherlands
Keywords
charge stripe order ; spin waves
Subject RIV
BG - Nuclear, Atomic and Molecular Physics, Colliders
R&D Projects
KSK1010104 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
Annotation
We have studied magnetic correlations in several compositions of stripe-ordered La2-xSrxNiO4. In this paper we show how polarized-neutron scattering has helped uncover important features of the magnetic ordering and spin dynamics. In particular, polarization analysis has enabled us (1) to characterize a spin reorientation transition, (2) to identify anisotropy gaps in the spin excitation spectrum and (3) to investigate an anomalous dip in the spin-wave intensity suggestive of coupling between collective spin and charge excitations
