Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 60: Correlated Electrons: f-Electron Systems

TT 60.6: Vortrag

Donnerstag, 23. März 2017, 10:45–11:00, HSZ 201

The quartet ground state in CeB6: an inelastic x-ray scattering study — •Martin Sundermann1,2, Kai Chen1, Hasan Yavaş3, Zachary Fisk4, Maurits Haverkort2,5, Liu Hao Tjeng2, and Andrea Severing1,21University of Cologne, Institute of Physics II, 50937 Cologne, Germany — 2Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany — 3PETRA III, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany — 4Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA — 5present address: Institute for Theoretical Physics, Heidelberg University, 69120 Heidelberg, Germany

We investigated the ground state symmetry of the cubic hidden order compound CeB6 by means of core level non-resonant inelastic x-ray scattering (NIXS). The information is obtained from the directional dependence of the scattering function that arises from higher than dipole transitions. Our new method confirms that the paramagnetic ground state is well described using a localized crystal-field model assuming a Γ8 quartet ground state.

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