BaCu3O4: High Temperature Magnetic Order in One-Dimensional S=1/2 Diamond-Chains

Carl-Willem Rischau; Brigitte Leridon; Dorothée Colson; Anne Forget; Philippe Monod

doi:10.1103/PhysRevB.85.134518

BaCu3O4: High Temperature Magnetic Order in One-Dimensional S=1/2 Diamond-Chains

Strongly Correlated Electrons 2012-04-18 v2

Authors: Carl-Willem Rischau , Brigitte Leridon , Dorothée Colson , Anne Forget , Philippe Monod

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Abstract

The magnetic properties of the alkaline earth oxocuprate BaCu3O4 are investigated. We show that the characteristic Cu3O4 layers of this material can be described with diamond chains of antiferromagnetically coupled Cu 1/2 spins with only a weak coupling between two adjacent chains. These Cu3O4 layers seem to represent a so far unique system of weakly coupled one-dimensional magnetic objects where the local AF ordering of the Cu2+ ions leads to an actual net magnetic moment of an isolated diamond chain. We demonstrate a magnetic transition at a high N\'eel temperature T_{N}=336 K.

Keywords

BaCu3O4 diamond chains S=1/2 spins antiferromagnetic coupling magnetic order N\'eel temperature one-dimensional magnetism

Cite

@article{arxiv.1202.5047,
  title  = {BaCu3O4: High Temperature Magnetic Order in One-Dimensional S=1/2 Diamond-Chains},
  author = {Carl-Willem Rischau and Brigitte Leridon and Dorothée Colson and Anne Forget and Philippe Monod},
  journal= {arXiv preprint arXiv:1202.5047},
  year   = {2012}
}

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