TY  - JOUR
AU  - Grünwald, A. T. D.
AU  - Wildes, A. R.
AU  - Schmidt, W.
AU  - Tartakovskaya, E. V.
AU  - Kwo, J.
AU  - Majkrzak, C.
AU  - Ward, R. C. C.
AU  - Schreyer, A.
TI  - Magnetic excitations in Dy/Y superlattices as seen via inelastic neutron scattering
JO  - Physical review / B
VL  - 82
IS  - 1
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-11615
SP  - 014426
PY  - 2010
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000280229100003
DO  - DOI:10.1103/PhysRevB.82.014426
UR  - https://juser.fz-juelich.de/record/11615
ER  -