Two-spinon and orbital excitations of the spin-Peierls system TiOCl.

@article{Glawion2011TwospinonAO,
  title={Two-spinon and orbital excitations of the spin-Peierls system TiOCl.},
  author={Sven Glawion and Jakoba Heidler and Maurits W. Haverkort and Laurent C. Duda and Thorsten Schmitt and Vladimir N. Strocov and Claude Monney and K. J. Zhou and A. Ruff and Michael Sing and Ralph Claessen},
  journal={Physical review letters},
  year={2011},
  volume={107 10},
  pages={
          107402
        }
}
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… 

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