Eur. Phys. J. B 53, 169-184 (2006)
https://doi.org/10.1140/epjb/e2006-00367-6

X-ray detected ferromagnetic resonance in thin films

Uniform precession in a steady-state foldover regime

¹ European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble Cedex, France
² Laboratoire de Minéralogie-Cristallographie, UMR-CNRS 7590, Université Paris VI-VII, IPGP, 4 place Jussieu, 75252 Paris Cedex 05, France

Received: 5 May 2006
Revised: 28 August 2006
Published online: 6 October 2006

Abstract

We discuss the physical content of X-ray Detected Magnetic Resonance (XDMR), i.e. a novel spectroscopy which uses XMCD to probe the resonant precession of the local magnetization in a strong microwave pump field. We focus on the simplest case of a steady-state precession of elemental moments in the non-linear regime of angular foldover. Like XMCD, XDMR is element and edge selective and could become a unique tool to investigate how precessional dynamics can locally affect the spin and orbital magnetization of p- or d-projected DOS. This should be possible only in the limit where there is no overdamping due to ultrafast orbit-lattice relaxation.