Absence of spin glass phase in the Edwards-Anderson Ising spin glass in magnetic field

Munetaka Sasaki, K. Hukushima, H. Yoshino, H. Takayama

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The presence (or absence) of spin glass phase in uniform magnetic field is studied in the three and four dimensional Edwards-Anderson Ising spin glass. Effective coupling Jeff and effective field Heff of each sample are measured by a numerical renormalization-group method, and their sample-to-sample fluctuations σJ and σH are estimated for various sizes L and fields H. As found in the Migdal-Kadanoff spin glass, σJ and σH are scaled as a function of L / ℓ (H), where ℓ (H) = H- 1 / ζ is the so-called overlap length. Furthermore, our data show that the scaling function of σJ drops to zero in the limit L / ℓ (H) → ∞. These results indicate the absence of spin glass phase even in an infinitesimal field.

本文言語English
ページ(範囲)1514-1516
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 1

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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