Determining the short-range spin correlations in the spin-chain Li.sub.2./sub.CuO.sub.2./sub. and CuGeO.sub.3./sub. compounds using resonant Inelastic X-ray scattering

0399291 - FZÚ 2014 RIV US eng J - Journal Article
Monney, C. - Bisogni, V. - Zhou, K.J. - Kraus, R. - Strocov, V.N. - Behr, G. - Málek, Jiří - Kuzian, R. - Drechsler, S.-L. - Johnston, S. - Revcolevschi, A. - Büchner, B. - Ronnow, H.M. - van den Brink, J. - Geck, J. - Schmitt, T.
Determining the short-range spin correlations in the spin-chain Li₂CuO₂ and CuGeO₃ compounds using resonant Inelastic X-ray scattering.
Physical Review Letters. Roč. 110, č. 8 (2013), "087403-1"-"087403-5". ISSN 0031-9007. E-ISSN 1079-7114
Institutional support: RVO:68378271
Keywords : RIXS * spin correlations * temperature dependence of Zhang-Rice singlet
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 7.728, year: 2013

Comparing the experimental data to many-body calculations we have identified the strong excitation around 3.5 eV as Zhang-Rice singlet excitation on neighbouring CuO4 plaquettes. The strong temperature dependence of this excitation enables us to probe short-range spin correlations on the 1 meV scale with outstanding sensitivity.
Permanent Link: http://hdl.handle.net/11104/0226612