Antiferromagnetism of SrFe 2As 2 studied by single-crystal 75As-NMR

Kentaro Kitagawa, Naoyuki Katayama, Kenya Ohgushi, Masashi Takigawa

研究成果: Article査読

61 被引用数 (Scopus)

抄録

We report results of 75As nuclear magnetic resonance (NMR) experiments on a self-flux grown highquality single crystal of SrFe 2As 2. The NMR spectra clearly show sharp first-order antiferromagnetic (AF) and structural transitions occurring simultaneously. The behavior in the vicinity of the transition is compared with our previous study on BaFe 2As 2. No significant difference was observed in the temperature dependence of the static quantities such as the AF splitting and electric quadrupole splitting. However, the results of the NMR relaxation rate revealed difference in the dynamical spin fluctuations. The stripe-type AF fluctuations in the paramagnetic state appear to be more anisotropic in BaFe 2As 2 than in SrFe 2As 2.

本文言語English
論文番号063706
ジャーナルjournal of the physical society of japan
78
6
DOI
出版ステータスPublished - 2009 6
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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