We have detected the presence of a spin-density wave (SDW) induced in the conduction band of a Dy0.60Lu0.40 thin film alloy that orders as a ${c{-}axis{{0ex}{0ex}}helimagnet.{{0ex}{0ex}}By{{0ex}{0ex}}tuning{{0ex}{0ex}}the{{0ex}{0ex}}incident{{0ex}{0ex}}x{-}ray{{0ex}{0ex}}energy{{0ex}{0ex}}to{{0ex}{0ex}}the{{0ex}{0ex}}L}III$ edges, we exploit the species sensitivity of x-ray resonant magnetic scattering to isolate the contribution of each element individually. As Lu has a filled 4f shell, magnetic intensity observed at that resonance reflects the polarization of the 5d orbitals in the helical SDW. The SDW amplitude is of order 0.2 μB/atom. Complementary neutron data show that the temperature dependence of the induced Lu intensity and its wave vector follow that of the total moment.
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Everitt et al. (1995) studied this question.
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