Spin-glass behavior in zero magnetic field using tunnel resistance

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

doi:10.1016/j.jmmm.2006.10.1099

Spin-glass behavior in zero magnetic field using tunnel resistance

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

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	1503-1505
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 2
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.1099
Publication status	Published - 2007 Mar

Keywords

Resistance
Spin glass
Temperature dependence
Tunnel junction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2006.10.1099

Cite this

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title = "Spin-glass behavior in zero magnetic field using tunnel resistance",

abstract = "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.",

keywords = "Resistance, Spin glass, Temperature dependence, Tunnel junction",

author = "Y. Takeuchi and K. Komatsu and H. Maki and T. Taniyama and T. Sato",

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TY - JOUR

T1 - Spin-glass behavior in zero magnetic field using tunnel resistance

AU - Takeuchi, Y.

AU - Komatsu, K.

AU - Maki, H.

AU - Taniyama, T.

AU - Sato, T.

PY - 2007/3

Y1 - 2007/3

N2 - 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.

AB - 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.

KW - Resistance

KW - Spin glass

KW - Temperature dependence

KW - Tunnel junction

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 2

ER -

Spin-glass behavior in zero magnetic field using tunnel resistance

Abstract

Keywords

ASJC Scopus subject areas

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