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

Glawion, S; Heidler, J; Haverkort, M W; Duda, L C; Schmitt, T; Strocov, V N; Monney, C; Zhou, K J; Ruff, A; Sing, M; Claessen, R

Glawion, S; Heidler, J; Haverkort, M W; Duda, L C; Schmitt, T; Strocov, V N; Monney, C; Zhou, K J; Ruff, A; Sing, M; Claessen, R.

Afiliación

Glawion S; Experimentelle Physik 4, Universität Würzburg, 97074 Würzburg, Germany.

Phys Rev Lett ; 107(10): 107402, 2011 Sep 02.

Article en En | MEDLINE | ID: mdl-21981527

RESUMEN

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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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2011 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos

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