2D and 3D magnetic behavior of Er in ErBa2Cu3O7

J. W. Lynn, T. W. Clinton, W. H. Li, R. W. Erwin, J. Z. Liu, K. Vandervoort, R. N. Shelton

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


Neutron scattering has been used to study the magnetic order of the Er ions in superconducting ErBa2Cu3O7. Above the 3D Néel temperature (TN=0.618 K) a rod of scattering characteristic of 2D behavior is unambiguously observed, showing that the magnetic interactions of the rare-earth ions are highly anisotropic; below TN the order parameter follows the exact Onsager solution for a 2D Ising antiferromagnet. At low T, two separate types of simple 3D antiferromagnetic structures are found, one characterized by a wave vector of (1/2,0,0), and the other by (1/2,0,1/2).

Original languageEnglish
Pages (from-to)2606-2609
Number of pages4
JournalPhysical Review Letters
Issue number23
StatePublished - 1989


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