Observation of two distinct magnetic states in ZrZn2 via the dHvA effect under pressure

N. Kimura, M. Endo, T. Isshiki, A. Ochiai, H. Aoki, T. Terashima, S. Uji, T. Matsumoto, G. G. Lonzarich

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We have found an anomaly in magnetic field dependence of the de Haas-van Alphen (dHvA) frequency of ZrZn2. Pressure dependence of this anomaly suggests an existence of two distinct ferromagnetic states and then a "nested" phase diagram similar to that of UGe2. The Stoner exchange parameter and the exchange splitting energy are 400 and 66 meV, respectively, which are derived from comparing the field dependence of the dHvA frequency difference with the magnetization. The two parameters do not change in both the low and slightly higher average moment states, suggesting that the phase transition between these states is ascribed to the change in the difference of majority and minority spin carrier densities.

本文言語English
ページ(範囲)1189-1191
ページ数3
ジャーナルPhysica B: Condensed Matter
359-361
SPEC. ISS.
DOI
出版ステータスPublished - 2005 4 30

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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