Publication

Back to overview

Determining the Short-Range Spin Correlations in the Spin-Chain Li2CuO2 and CuGeO3 Compounds Using Resonant Inelastic X-Ray Scattering

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2013
Author Monney Claude, Bisogni Valentina, Zhou Ke-Jin, Kraus Roberto, Strocov Vladimir N., Behr Guenter, Malek Jiri, Kuzian Roman, Drechsler Stefan-Ludwig, Johnston Steve, Revcolevschi Alexandre, Buechner Bernd, Ronnow Henrik M., van den Brink Jeroen, Geck Jochen, Schmitt Thorsten,
Project Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials
Show all

Original article (peer-reviewed)

Journal PHYSICAL REVIEW LETTERS
Volume (Issue) 110(8)
Page(s) 087403
Title of proceedings PHYSICAL REVIEW LETTERS
DOI 10.1103/PhysRevLett.110.087403

Open Access

URL https://infoscience.epfl.ch/record/185342?ln=en
Type of Open Access Repository (Green Open Access)

Abstract

We report a high-resolution resonant inelastic soft x-ray scattering study of the quantum magnetic spin-chain materials Li2CuO2 and CuGeO3. By tuning the incoming photon energy to the oxygen K edge, a strong excitation around 3.5 eV energy loss is clearly resolved for both materials. Comparing the experimental data to many-body calculations, we identify this excitation as a Zhang-Rice singlet exciton on neighboring CuO4 plaquettes. We demonstrate that the strong temperature dependence of the inelastic scattering related to this high-energy exciton enables us to probe short-range spin correlations on the 1 meV scale with outstanding sensitivity.
-