This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.82.014426 in citations.
Please use the identifier: http://hdl.handle.net/2128/10973 in citations.
Magnetic excitations in Dy/Y superlattices as seen via inelastic neutron scattering
Magnetic excitations in Dy/Y superlattices as seen via inelastic neutron scattering
Measurements of the spin excitations propagating normal to the interfaces in Dy/Y superlattices using neutron inelastic scattering are presented. For a given magnon momentum, a neutron-scattering spectrum shows multiple peaks at different energies, which indicates discrete energy spectra. The result...
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Personal Name(s): | Grünwald, A. T. D. |
---|---|
Wildes, A. R. / Schmidt, W. / Tartakovskaya, E. V. / Kwo, J. / Majkrzak, C. / Ward, R. C. C. / Schreyer, A. | |
Contributing Institute: |
JCNS; JCNS JARA-FIT; JARA-FIT Neutronenstreuung; IFF-5 Streumethoden; IFF-4 |
Published in: | Physical Review B Physical review / B, 82 82 (2010 2010) 1 1, S. 014426 014426 |
Imprint: |
College Park, Md.
APS
2010
|
Physical Description: |
014426 |
DOI: |
10.1103/PhysRevB.82.014426 |
Document Type: |
Journal Article |
Research Program: |
BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) |
Series Title: |
Physical Review B
82 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/10973 in citations.
Measurements of the spin excitations propagating normal to the interfaces in Dy/Y superlattices using neutron inelastic scattering are presented. For a given magnon momentum, a neutron-scattering spectrum shows multiple peaks at different energies, which indicates discrete energy spectra. The results are compared with theoretical calculations developed here to describe magnetic excitations in rare-earth superlattices. The theory accounts for Ruderman-Kittel-Kasuya-Yosida (RKKY) and Dzyaloshinsky-Moriya interactions in incommensurate helicoidal structures and achieves a quantitative agreement with the experimental data. This work demonstrates that neutron inelastic scattering can be used for systematic studies of the exchange interactions and spin dynamics in nanomagnetic systems over wide areas of the Brillouin zone. |