Order Parameter Criticality of the [Formula presented] Random-Field Ising Antiferromagnet [Formula presented]

F. Ye, L. Zhou, S. Larochelle, L. Lu, D. P. Belanger, M. Greven, D. Lederman

Research output: Contribution to journalArticle

Abstract

The critical exponent [Formula presented] for the random-field Ising model order parameter is determined using extinction-free magnetic x-ray scattering for [Formula presented] in magnetic fields of 10 and 11 T. The observed value is consistent with other experimental random-field critical exponents, but disagrees sharply with Monte Carlo and exact ground state calculations on finite-sized systems.

Original languageEnglish (US)
JournalPhysical review letters
Volume89
Issue number15
DOIs
StatePublished - 2002

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