Long-range order and low-energy magnetic excitations in CeRu2Al10
Julien Robert, Jean-Michel Mignot, Gilles Andr\'e, Takashi Nishioka,, Riki Kobayashi, Masahiro Matsumura, Hiroshi Tanida, Daiki Tanaka, and, Masafumi Sera
TL;DR
This study investigates the unconventional magnetic order in CeRu2Al10 below 27 K using neutron scattering, revealing superstructure peaks and an 8 meV magnetic excitation, indicating complex magnetic behavior.
Contribution
It provides new insights into the magnetic ordering and excitations in CeRu2Al10 through neutron scattering experiments.
Findings
Detection of superstructure peaks indicating unconventional order.
Observation of an 8 meV magnetic excitation in the ordered phase.
Evidence of forbidden reflections suggesting complex magnetic structure.
Abstract
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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