Existence of a phase transition under finite magnetic field in the long-range RKKY Ising spin glass DyxY1-xRu 2Si2

Yoshikazu Tabata, Kousuke Matsuda, Satoshi Kanada, Teruo Yamazaki, Takeshi Waki, Hiroyuki Nakamura, Keisuke Sato, Koichi Kindo

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13 Citations (Scopus)

Abstract

A phase transition of a model compound of the long-range Ising spin glass (SG) DyxY1-xRu2Si2, where spins interact via the Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction, has been investigated. The static and dynamic scaling analyses reveal that the SG phase transition in the model magnet belongs to the mean-field universality class. Moreover, the characteristic relaxation time in finite magnetic fields, as well as in zero field, exhibits a critical divergent behavior, indicating the stability of the SG phase in finite fields. The presence of the SG phase transition in the field in this model magnet strongly suggests that the replica symmetry is broken in the long-range Ising SG.

Original languageEnglish
Article number123704
JournalJournal of the Physical Society of Japan
Volume79
Issue number12
DOIs
Publication statusPublished - 2010 Dec 1
Externally publishedYes

Keywords

  • Critical phenomena
  • Dy YRuSi
  • Replica symmetry breaking
  • Spin glass

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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