Crystalline electric field study in the pyrochlore Nd2Ir 2O7 with metal-insulator transition

M. Watahiki, K. Tomiyasu, K. Matsuhira, K. Iwasa, M. Yokoyama, S. Takagi, M. Wakeshima, Y. Hinatsu

研究成果: Conference article査読

18 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号012080
ジャーナルJournal of Physics: Conference Series
320
DOI
出版ステータスPublished - 2011
イベントInternational Conference on Frustration in Condensed Matter, ICFCM - Sendai, Japan
継続期間: 2011 1月 112011 1月 14

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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