Spin-glass behavior in zero magnetic field using tunnel resistance

Y. Takeuchi, K. Komatsu, H. Maki, T. Taniyama, T. Sato

研究成果: Article査読

抄録

The measurement of spin glass in zero magnetic field is essential to investigate the intrinsic nature of spin glass. We pay attention to tunnel resistance between spin-glass layers. The temperature dependence of tunnel resistance between spin-glass layers with the structure of AgMn / Al2 O3 / AgMn was measured, and was compared with that of Al / Al2 O3 / AgMn. For the junction of AgMn / Al2 O3 / AgMn, tunnel resistance shows a peak around the spin-glass transition temperature, but no peak was observed for the junction of Al / Al2 O3 / AgMn. The results indicate that the magnetic correlation between spin-glass layers is reflected to tunnel resistance. The singularity of the tunnel resistance between spin-glass layers is discussed by the droplet theory.

本文言語English
ページ(範囲)1503-1505
ページ数3
ジャーナルJournal of Magnetism and Magnetic Materials
310
2 SUPPL. PART 2
DOI
出版ステータスPublished - 2007 3月

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

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