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

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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1514-1516
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • Almeida-Thouless line
  • Monte Carlo
  • Renormalization group
  • Spin glass

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Absence of spin glass phase in the Edwards-Anderson Ising spin glass in magnetic field'. Together they form a unique fingerprint.

Cite this