Element selective X-ray Detected Magnetic Resonance

J. Goulon (1) , A. Rogalev (1) , F. Wilhelm (1) , N. Jaouen (1) , C. Goulon (1) , G. Goujon (1) , J. Ben Youssef (2) , M.V. Indenbom (2)

1 ESRF - European Synchrotron Radiation Facility
2 LMB - Laboratoire de magnétisme de Bretagne

Element selective X-ray Detected Magnetic Resonance (XDMR) was measured on exciting the Fe K-edge and Y L-edges in a high quality Yttrium Iron Garnet (YIG) thin film. Resonant pumping at high microwave power was achieved in the non-linear foldover regime and X-ray Magnetic Circular Dichroism (XMCD) was used to probe the time-invariant change of the magnetization due to the precession of the relevant magnetization components at the Fe or Y sites. Emphasis is laid on the pure orbital character of the effective operators responsible for a K-edge XDMR signal. At the spin-orbit split Y L-edges, extended dynamical sum-rules are required to disentangle the forced precession of the spin and orbital magnetization components.

Domaines: Physique [physics]; Matière Condensée [cond-mat]

J. Goulon, A. Rogalev, F. Wilhelm, N. Jaouen, C. Goulon, et al.. Element selective X-ray Detected Magnetic Resonance. Journal of Electron Spectroscopy and Related Phenomena, 2007, 156-158, pp.38-44. ⟨10.1016/j.elspec.2006.11.047⟩. ⟨hal-01946249⟩