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

doi:10.1103/PhysRevLett.58.1276

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 journal › Article › Academic › peer-review

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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 language	English
Pages (from-to)	1276-1279
Number of pages	4
Journal	Physical review letters
Volume	58
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.58.1276
Publication status	Published - 1 Jan 1987
Externally published	Yes

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AB - 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.

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

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