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Magnetic properties of antiferromagnetic quantum Heisenberg spin systems with a strict single particle site occupation

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  • R. Dillenschneider
  • J. Richert

Abstract

We work out the magnetization and susceptibility of Heisenberg- and XXZ-model antiferromagnet spin-1/2 systems in D dimensions under a rigorous constraint of single particle site occupancy. Quantum and thermal fluctuations are taken into account up to the first order in a loop expansion beyond the Néel state mean field solution. We discuss the results, their validity in the vicinity of the critical point and compare them with the results obtained by means of a spin wave approach. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Suggested Citation

  • R. Dillenschneider & J. Richert, 2006. "Magnetic properties of antiferromagnetic quantum Heisenberg spin systems with a strict single particle site occupation," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 49(2), pages 187-194, January.
    • Handle: RePEc:spr:eurphb:v:49:y:2006:i:2:p:187-194
    DOI: 10.1140/epjb/e2006-00052-x
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