Observation of multiple Zhang-Rice excitations in a correlated solid: Resonant inelastic X-ray scattering study of Li2CuO2
2007 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 79, no 4, 47012- p.Article in journal (Refereed) Published
Multiple Zhang-Rice type spectral features have been observed in resonant inelastic X-ray scattering (RIXS) from the quasi -one-dimensional cuprate charge transfer insulator Li2CuO2. The first feature appears at constant emission energy, and is associated with a Zhang-Rice singlet final state. The second is an interplaquette charge transfer excitation that results in a novel triplet Zhang-Rice -type final state. It is accompanied by the presence of a O 2p nonbonding to upper Hubbard band excitation at an energy close to that of a calculated triplet charge transfer Zhang-Rice -type excitation. The site selectivity and polarization rules associated with RIXS allows these two excitations to be distinguished.
Place, publisher, year, edition, pages
2007. Vol. 79, no 4, 47012- p.
IdentifiersURN: urn:nbn:se:uu:diva-144028DOI: 10.1209/0295-5075/79/47012ISI: 000248980000020OAI: oai:DiVA.org:uu-144028DiVA: diva2:392140