Long-range order and low-energy magnetic excitations in CeRu2Al10

Details Long-range order and low-energy magnetic excitations in CeRu2Al10 Long-range order and low-energy magnetic excitations in CeRu2Al10

2010-03-25

arxiv.org/abs/1003.4933v5

Julien Robert, Jean-Michel Mignot, Gilles Andre, Takashi Nishioka, Riki Kobayashi, Masahiro Matsumura, Hiroshi Tanida, Daiki T

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages; 4 figures

Scientific paper

10.1103/PhysRevB.82.100404

The nature of the unconventional ordered phase occurring in CeRu2Al10 below T0 = 27 K was investigated by neutron scattering. Powder diffraction patterns show clear superstructure peaks corresponding to forbidden (h + k)-odd reflections of the Cmcm space group. Inelastic neutron scattering experiments further reveal a pronounced magnetic excitation developing in the ordered phase at an energy of 8 meV.

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