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- Glawion, S., et al.
(author)
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Two-Spinon and Orbital Excitations of the Spin-Peierls System TiOCl
- 2011
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In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 107:10, s. 107402-
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Journal article (peer-reviewed)abstract
- We combine high-resolution resonant inelastic x-ray scattering with cluster calculations utilizing a recently derived effective magnetic scattering operator to analyze the polarization, excitation energy, and momentum-dependent excitation spectrum of the low-dimensional quantum magnet TiOCl in the range expected for orbital and magnetic excitations (0-2.5 eV). Ti 3d orbital excitations yield complete information on the temperature-dependent crystal-field splitting. In the spin-Peierls phase we observe a dispersive two-spinon excitation and estimate the inter- and intradimer magnetic exchange coupling from a comparison to cluster calculations.
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