Diluted antiferromagnets in a magnetic field : A fractal-domain state with spin-glass behavior

Nowak, Ulrich; Usadel, Klaus-Dieter

Diluted antiferromagnets in a magnetic field : A fractal-domain state with spin-glass behavior

Dateien

Nowak_1991_DilutedAntiferromagnets.pdfGröße: 2.3 MBDownloads: 354

Datum

1991

Autor:innen

Nowak, Ulrich

Usadel, Klaus-Dieter

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B. 1991, 44(14), pp. 7426-7432. Available under: doi: 10.1103/PhysRevB.44.7426

Zusammenfassung

The phase diagram of diluted Ising antiferromagnets in the limit of a high external magnetic field B and strong dilution is investigated by a Monte Carlo simulation. The two relevant lines in the B-T plane of the phase diagram, Beq(T) which marks the onset of hysteretic effects and Bc(T) above which antiferromagnetic long-range order is no longer stable are determined. Between these two lines there is a broad range of high fields and low temperatures with the characteristics of a frozen-domain state. The irreversibilities observed in this state and the scaling behavior of Beq(T) both give evidence for the occurrence of a spin-glass phase. A further investigation of the relevant scaling laws for the domains leads to the conclusion that the domain state consists of fractal domains becoming stable for high magnetic fields.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

NOWAK, Ulrich, Klaus-Dieter USADEL, 1991. Diluted antiferromagnets in a magnetic field : A fractal-domain state with spin-glass behavior. In: Physical Review B. 1991, 44(14), pp. 7426-7432. Available under: doi: 10.1103/PhysRevB.44.7426

BibTex

@article{Nowak1991Dilut-5271,
  year={1991},
  doi={10.1103/PhysRevB.44.7426},
  title={Diluted antiferromagnets in a magnetic field : A fractal-domain state with spin-glass behavior},
  number={14},
  volume={44},
  journal={Physical Review B},
  pages={7426--7432},
  author={Nowak, Ulrich and Usadel, Klaus-Dieter}
}

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