Determining the Short-Range Spin Correlations in the Spin-Chain Li2CuO2 and CuGeO3 Compounds Using Resonant Inelastic X-Ray Scattering
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
2013

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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. DOI: 10.1103/PhysRevLett.110.087403

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Title Determining the Short-Range Spin Correlations in the Spin-Chain Li2CuO2 and CuGeO3 Compounds Using Resonant Inelastic X-Ray Scattering
Author(s) 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
Published in Physical Review Letters
Pagination 5
Volume 110
Issue 8
Pages 087403
Date 2013
Publisher College Pk, American Physical Society
ISSN 0031-9007
Keywords
DOI https://doi.org/10.1103/PhysRevLett.110.087403
Other identifier(s) View record in Web of Science
Laboratories LQM
Record Appears in Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LQM - Laboratory for Quantum Magnetism
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2013-03-28

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