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MA: Fachverband Magnetismus
MA 53: Magnetic Scattering Methods
MA 53.3: Talk
Friday, March 11, 2016, 10:00–10:15, H33
Study of the Spin-Chain cuprate Sr2CuO3 with OK-edge Resonant Inelastic X-ray Scattering — •Justine Schlappa1,2, Umesh Kumar3, Ke-Jin Zhou2,4, Surjeet Singh5,6, Vladimir N. Strocov2, Alexandre Revcolevschi4, Henrik M. Ronnow7, Steve Johnston3, and Thorsten Schmitt2 — 1European X-ray Free Electron Laser Facility GmbH, Hamburg, Germany — 2Paul Scherrer Institut, Villigen, Switzerland — 3University of Tennessee, Knoxville, USA — 4Diamond Light Source, Oxfordshire, UK — 5Université Paris-Sud, Orsay, France — 6Indian Institute of Science, Education and Research, Pune, India — 7École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
We present the study of Heisenberg Spin-1/2 chain compound Sr2CuO3 with oxygen K-edge Resonant Inelastic X-ray Scattering. The spectra reveal a range of low-energy excitations between tens of meV and 8 eV. From small-cluster exact diagonalization calculations the structures at higher energies can be assigned to dd and charge-transfer excitations, whereas the structures below 1 eV partially to spin- and phonon excitations. The photon wave length allowed accessing half of the Briolluin zone in this study.