Direct observation of quadrupolar excitons in the heavy-fermion superconductor PrOs4Sb12

K. Kuwahara, K. Iwasa, M. Kohgi, K. Kaneko, N. Metoki, S. Raymond, M. A. Méasson, J. Flouquet, H. Sugawara, Y. Aoki, H. Sato

研究成果: Article査読

89 被引用数 (Scopus)

抄録

We report inelastic neutron scattering experiments performed to investigate the low energy magnetic excitations on single crystals of the heavy-fermion superconductor PrOs4Sb12. The observed excitation clearly softens at a wave vector Q=(1,0,0), which is the same as the modulation vector of the field-induced antiferro-quadrupolar ordering, and its intensity at Q=(1,0,0) is smaller than that around the zone center. This result directly evidences that this excitonic behavior is derived mainly from nonmagnetic quadrupolar interactions. Furthermore, the narrowing of the linewidths of the excitations below the superconducting transition temperature indicates the close connection between the superconductivity and the excitons.

本文言語English
論文番号107003
ジャーナルPhysical review letters
95
10
DOI
出版ステータスPublished - 2005 9 2

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Direct observation of quadrupolar excitons in the heavy-fermion superconductor PrOs4Sb12」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル