Critical phenomena in canonical spin glass AuMn from Hall effect measurements

T. Taniguchi, Teruo Yamazaki, K. Yamanaka, Y. Tabata, S. Kawarazaki

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Abstract

The extraordinary Hall resistivity ρex and the magnetization M of canonical spin glass AuMn with 8 at% Mn were measured simultaneously as a function of temperature with close attention to thermal and magnetic field hysteresis. The data of ρex show an anomaly at the spin glass transition temperature Tg. Moreover, the anomalous Hall coefficient RS ∼ ρex / M, which represents the chiral susceptibility of the system in the present case, also shows the anomaly. In conventional theories, the extraordinary Hall resistivity ρex is represented, ρex = M (A ρ + B ρ2), where ρ is the resistivity, and A and B are constants. Since ρ (T) is monotonic and smooth, the behavior of ρex / M clearly indicates that another term has to be included in the expression of ρex. The results can be interpreted consistently in terms of a chirality ordering model of canonical spin glasses. We argue the critical phenomena of the spin glass transition from Hall effect measurements in comparison with that from magnetization measurements.

Original languageEnglish
Pages (from-to)1526-1528
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - 2007 Mar 1
Externally publishedYes

Keywords

  • Anomalous Hall effect
  • Canonical spin glass
  • Chirality

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Taniguchi, T., Yamazaki, T., Yamanaka, K., Tabata, Y., & Kawarazaki, S. (2007). Critical phenomena in canonical spin glass AuMn from Hall effect measurements. Journal of Magnetism and Magnetic Materials, 310(2 SUPPL. PART 2), 1526-1528. https://doi.org/10.1016/j.jmmm.2006.10.666