- Abstract:
-
Using the MAPS spectrometer at the ISIS spallation source, we have measured the magnetic excitations of single-crystal samples of stripe-ordered La2-x Srx Ni O4 with x=0.333 and 0.275. The full two-dimensional spin-wave dispersions were obtained using incident energies of 60 and 160 meV. To analyze the excitations, we have evaluated a spin-only Hamiltonian describing diagonal, site-centered stripes in the linear spin-wave approximation. Besides the superexchange energy J within antiferromagne...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1103/PhysRevB.72.064437
-
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- Journal:
- PHYSICAL REVIEW B
- Volume:
- 72
- Issue:
- 6
- Publication date:
- 2005-08-05
- DOI:
- EISSN:
-
1550-235X
- ISSN:
-
1098-0121
- URN:
-
uuid:ceb817d9-9b92-4489-9521-fab876781458
- Source identifiers:
-
29920
- Local pid:
- pubs:29920
- Language:
- English
- Copyright date:
- 2005
Journal article
Mapping spin-wave dispersions in stripe-ordered La2-xSrxNiO4 (x=0.275, 0.333)
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