Eur. Phys. J. B 4, 285-289 (1998)
https://doi.org/10.1007/s100510050381

Long and short range spin-spin interactions in ErBaErBa₂Cu₃O₇

Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Università di Parma, 43100 Parma, Italy

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Received: 12 January 1998
Revised: 26 March 1998
Accepted: 10 April 1998
Published online: 15 August 1998

Abstract

Dipolar spin-spin interactions play a crucial role as for the magnetic order in the compounds of the RBa₂Cu₃O_6+x family, (R = Dy, Er, Nd). However, inelastic neutron scattering data observed in ErBa₂Cu₃O₇ can be explained only if exchange interactions in addition to dipolar ones are taken into account.