Easy-plane XY spin fluctuations in the cycloidal magnet UPtGe studied via field-orientation-dependent Pt 195 NMR

Y. Tokunaga, A. Nakamura, D. Aoki, Y. Shimizu, Y. Homma, F. Honda, H. Sakai, T. Hattori, S. Kambe

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

Pt195 NMR measurements have been performed on a single crystal of the uranium-based compound UPtGe, which is the only 5f system known to possess an incommensurate helical (cycloidal) structure below TN=50 K. Knight shift measurement confirmed the isotropic character of the static spin susceptibilities in hexagonal-like ac crystal planes of the EuAuGe-type crystal structure. The hyperfine coupling constants were also found to be isotropic in the planes, estimated to be 59 kOe/μB. Nuclear relaxation rate (1/T1) measurement revealed the development of the antiferromagnetic spin fluctuations with XY character confined to the hexagonal-like plane below 200 K. The results present a clear contrast to the Ising anisotropy of the fluctuations in ferromagnetic superconductors UCoGe and URhGe.

本文言語英語
論文番号014425
ジャーナルPhysical Review B
98
1
DOI
出版ステータス出版済み - 7 23 2018
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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