Magnetic Excitations and Spin Correlations in Two-Dimensional Percolating Ising Antiferromagnets

Kazuaki Iwasa, Hironobu Ikeda, Ken H. Andersen, Roger S. Eccleston

研究成果: Article査読

抄録

The magnetic excitations in two-dimensional percolating Ising-type antiferromagnets, Rb2CocMg1-cF4 (c = 0.60 and 0.70), were studied by pulsed-neutron scattering. The peaks due to Ising-cluster excitations were clearly observed far above TN. Their intensities exist even at 5TN and 2TN for c = 0-60 and 0.70, respectively. This reveals that the characteristic time of the spin correlation in percolating networks is much longer than that of neutrons traveling through the systems, and, therefore, the spins can provide molecular fields at the neighboring sites, even in paramagnetic regions.

本文言語English
ページ(範囲)1038-1042
ページ数5
ジャーナルjournal of the physical society of japan
65
4
DOI
出版ステータスPublished - 1996
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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