Transverse fluctuations in an Ising spin-glass: Fe0.4Mg0.6Cl2

Po Zen Wong*, H. Yoshizawa, S. M. Shapiro, J. A. Mydosh, J. Van Den Berg, T. T.M. Palstra

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)
6 Downloads (Pure)

Abstract

ac-susceptibility and neutron-diffraction experiments show that Fe0.4Mg0.6Cl2 is a three-dimensional Ising spin-glass with a transition temperature Tsg=3.4 K. Inelastic-scattering experiments show a sharp spin-wave peak at the zone center for all temperature T2Tsg. This is the first direct observation of long-wavelength excitation in a spin-glass system. We suggest that it is due to the precession of spin clusters around the easy axis.

Original languageEnglish
Pages (from-to)1276-1279
Number of pages4
JournalPhysical review letters
Volume58
Issue number12
DOIs
Publication statusPublished - 1 Jan 1987
Externally publishedYes

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