We carried out inelastic neutron scattering measurements to identify crystalline electric field (CEF) states of Nd3+ (a total angular momentum J = 9/2) in Nd2Ir2O7, which exhibits a metal-insulator transition at TMI = 36 K. Excitation peaks observed around 26 and 41 meV are interpreted as CEF excitations within five Kramers doublets. It is notable that splitting of the ground doublet by 1.3 meV was microscopically observed at 3 K for the first time, indicating emergence of magnetic long-range order despite geometrical frustration. The splitting width decreases with increasing the temperature towards TMI like an order parameter of the transition. We discuss the results in light of Nd-Ir interactions.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2011|
|Event||International Conference on Frustration in Condensed Matter, ICFCM - Sendai, Japan|
Duration: 2011 Jan 11 → 2011 Jan 14
ASJC Scopus subject areas
- Physics and Astronomy(all)