Theory of Resonant Inelastic X-Ray Scattering by Collective Magnetic Excitations

M. W. Haverkort
Phys. Rev. Lett. 105, 167404 – Published 15 October 2010

Abstract

I present a tractable theory for the resonant inelastic x-ray scattering (RIXS) of magnons. The low-energy transition operator is written as a product of local spin operators and fundamental x-ray absorption spectral functions. This leads to simple selection rules. The scattering cross section linear (quadratic) in spin operators is proportional to the fundamental magnetic circular (linear) dichroic spectral function. RIXS is a novel tool to measure magnetic quasiparticles (magnons) and the incoherent spectral weight, as well as multiple magnons up to very high energy losses, in small samples, thin films, and multilayers, complementary to neutron scattering.

  • Figure
  • Received 9 October 2009

DOI:https://doi.org/10.1103/PhysRevLett.105.167404

© 2010 The American Physical Society

Authors & Affiliations

M. W. Haverkort

  • Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569 Stuttgart Germany

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Issue

Vol. 105, Iss. 16 — 15 October 2010

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